1985 lines
57 KiB
C++
1985 lines
57 KiB
C++
/*****************************************************************************\
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** **
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** LCR **
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** **
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**---------------------------------------------------------------------------**
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** Copyright: Andreas Eversberg **
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** **
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** mISDN ss5 **
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** **
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\*****************************************************************************/
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/*
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* STATES:
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*
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* there are three types of states
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*
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* - the port state (p_state): used for current call state
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* - the ss5 state (p_m_s_state): used for current tone
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* - the ss5 signal state (p_m_s_signal): used for current signal state of current tone
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*
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* the port state differs from isdn state:
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*
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* - PORT_STATE_IDLE: used until number is complete. outgoing overlap dialing is received in this state.
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* - PORT_STATE_OUT_SETUP: the seizing procedure is started.
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* - PORT_STATE_OUT_OVERLAP: the transmitter is sending the digits.
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* - PORT_STATE_OUT_PROCEEDING: the digits are sent, we wait until someone answers.
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* - PORT_STATE_CONNECT: a call is answered on either side.
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* - PORT_STATE_IN_SETUP: the seizing is received, we wait for the first digit.
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* - PORT_STATE_IN_OVERLAP: the digits are received.
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* - PORT_STATE_IN_PROCEEDING: the number is complete, a SETUP is indicated.
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* - PORT_STATE_IN_DISCONNECT: a clear-back was received, an DISCONNECT is indicated.
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* - PORT_STATE_RELEASE: the clear forward procedure is started.
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*
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*/
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#include "main.h"
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//#define DEBUG_DETECT
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/* ss5 signal states */
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enum {
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SS5_STATE_IDLE, /* no signal */
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SS5_STATE_SEIZING, /* seizing */
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SS5_STATE_PROCEED_TO_SEND, /* proceed-to-send */
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SS5_STATE_BUSY_FLASH, /* busy-flash / clear back */
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SS5_STATE_ACK_BUSY_FLASH, /* acknowledge of busy/answer/clear-back */
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SS5_STATE_ANSWER, /* answer */
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SS5_STATE_ACK_ANSWER, /* acknowledge of busy/answer/clear-back */
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SS5_STATE_FORWARD_TRANSFER, /* forward transfer */
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SS5_STATE_CLEAR_BACK, /* clear-back */
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SS5_STATE_ACK_CLEAR_BACK, /* acknowledge of busy/answer/clear-back */
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SS5_STATE_CLEAR_FORWARD, /* clear-forward */
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SS5_STATE_RELEASE_GUARD, /* release-guard */
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SS5_STATE_DIAL_OUT, /* dialing state (transmitter) */
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SS5_STATE_DIAL_IN, /* dialing state (receiver) */
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SS5_STATE_DIAL_IN_PULSE, /* dialing state (receiver with pulses) */
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SS5_STATE_DELAY, /* after signal wait until next signal can be sent */
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SS5_STATE_DOUBLE_SEIZE, /* in case of a double seize, we make the remote size recognize it */
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};
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const char *ss5_state_name[] = {
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"STATE_IDLE",
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"STATE_SEIZING",
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"STATE_PROCEED_TO_SEND",
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"STATE_BUSY_FLASH",
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"STATE_ACK_BUSY_FLASH",
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"STATE_ANSWER",
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"STATE_ACK_ANSWER",
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"STATE_FORWARD_TRANSFER",
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"STATE_CLEAR_BACK",
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"STATE_ACK_CLEAR_BACK",
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"STATE_CLEAR_FORWARD",
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"STATE_RELEASE_GUARD",
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"STATE_DIAL_OUT",
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"STATE_DIAL_IN",
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"STATE_DIAL_IN_PULSE",
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"STATE_DELAY",
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"STATE_DOUBLE_SEIZE",
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};
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enum {
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SS5_SIGNAL_NULL,
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/* sending signal states */
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SS5_SIGNAL_SEND_ON, /* sending signal, waiting for acknowledge */
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SS5_SIGNAL_SEND_ON_RECOG, /* sending signal, receiving ack, waiting for recogition timer */
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SS5_SIGNAL_SEND_OFF, /* silence, receiving ack, waiting for stop */
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/* receiving signal states */
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SS5_SIGNAL_RECEIVE_RECOG, /* receiving signal, waiting for recognition timer */
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SS5_SIGNAL_RECEIVE, /* receiving signal / send ack, waiting for stop */
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SS5_SIGNAL_DELAY, /* delay after release guard to prevent ping-pong */
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/* sending / receiving digit states */
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SS5_SIGNAL_DIGIT_PAUSE, /* pausing before sending (next) digit */
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SS5_SIGNAL_DIGIT_ON, /* sending digit */
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SS5_SIGNAL_PULSE_OFF, /* make */
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SS5_SIGNAL_PULSE_ON, /* break */
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};
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const char *ss5_signal_name[] = {
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"NULL",
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"SIGNAL_SEND_ON",
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"SIGNAL_SEND_ON_RECOG",
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"SIGNAL_SEND_OFF",
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"SIGNAL_RECEIVE_RECOG",
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"SIGNAL_RECEIVE",
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"SIGNAL_DELAY",
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"SIGNAL_DIGIT_PAUSE",
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"SIGNAL_DIGIT_ON",
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"SIGNAL_PULSE_OFF",
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"SIGNAL_PULSE_ON",
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};
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/* ss5 signal timers (in samples) */
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#define SS5_TIMER_AFTER_SIGNAL (100*8) /* wait after signal is terminated */
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#define SS5_TIMER_KP (100*8) /* duration of KP1 or KP2 digit */
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#define SS5_TIMER_DIGIT (55*8) /* duration of all other digits */
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#define SS5_TIMER_PAUSE (55*8) /* pause between digits */
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#define SS5_TIMER_FORWARD (850*8) /* forward transfer length */
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#define SS5_TIMER_RECOG_SEIZE (40*8) /* recognition time of seizing / proceed-to-send signal */
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#define SS5_TIMER_RECOG_OTHER (125*8) /* recognition time of all other f1/f2 signals */
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#define SS5_TIMER_SIGNAL_LOSS (15*8) /* minimum time of signal loss for a continous signal */
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#define SS5_TIMER_DOUBLE_SEIZE (850*8) /* double seize length */
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#define SS5_TIMER_RELEASE_GUARD (850*8) /* be sure to release after clear-forward */
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#define SS5_TIMER_RELEASE_MAX (2000*8)/* maximum time for release guard to prevent 'double-releasing' */
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#define SS5_TIMER_RELEASE_DELAY (4000*8)/* wait after release guard to prevent ping-pong */
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#define BELL_TIMER_BREAK (50*8) /* loop open, tone */
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#define BELL_TIMER_MAKE (50*8) /* loop closed, no tone */
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#define BELL_TIMER_PAUSE (800*8) /* interdigit delay */
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#define BELL_TIMER_RECOG_HANGUP (200*8) /* time to recognize hangup */
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#define BELL_TIMER_RECOG_END (300*8) /* recognize end of digit */
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/* ss5 timers */
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#define SS5_TIMER_OVERLAP 5.0 /* timeout for overlap digits received on outgoing exchange */
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/*
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* ss5 trace header
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*/
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enum { /* even values are indications, odd values are requests */
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SS5_SEIZING_IND,
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SS5_SEIZING_REQ,
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SS5_PROCEED_TO_SEND_IND,
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SS5_PROCEED_TO_SEND_REQ,
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SS5_BUSY_FLASH_IND,
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SS5_BUSY_FLASH_REQ,
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SS5_ANSWER_IND,
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SS5_ANSWER_REQ,
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SS5_CLEAR_BACK_IND,
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SS5_CLEAR_BACK_REQ,
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SS5_CLEAR_FORWARD_IND,
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SS5_CLEAR_FORWARD_REQ,
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SS5_RELEASE_GUARD_IND,
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SS5_RELEASE_GUARD_REQ,
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SS5_ACKNOWLEDGE_IND,
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SS5_ACKNOWLEDGE_REQ,
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SS5_DOUBLE_SEIZURE_IND,
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SS5_DOUBLE_SEIZURE_REQ,
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SS5_DIALING_IND,
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SS5_DIALING_REQ,
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SS5_FORWARD_TRANSFER_IND,
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SS5_FORWARD_TRANSFER_REQ,
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};
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static struct isdn_message {
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const char *name;
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unsigned int value;
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} ss5_message[] = {
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{"SEIZING RECEIVED", SS5_SEIZING_IND},
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{"SEIZING SENDING", SS5_SEIZING_REQ},
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{"PROCEED-TO-SEND RECEIVED", SS5_PROCEED_TO_SEND_IND},
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{"PROCEED-TO-SEND SENDING", SS5_PROCEED_TO_SEND_REQ},
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{"BUSY-FLASH RECEIVED", SS5_BUSY_FLASH_IND},
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{"BUSY-FLASH SENDING", SS5_BUSY_FLASH_REQ},
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{"ANSWER RECEIVED", SS5_ANSWER_IND},
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{"ANSWER SENDING", SS5_ANSWER_REQ},
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{"CLEAR-BACK RECEIVED", SS5_CLEAR_BACK_IND},
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{"CLEAR-BACK SENDING", SS5_CLEAR_BACK_REQ},
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{"CLEAR-FORWARD RECEIVED", SS5_CLEAR_FORWARD_IND},
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{"CLEAR-FORWARD SENDING", SS5_CLEAR_FORWARD_REQ},
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{"RELEASE-GUARD RECEIVED", SS5_RELEASE_GUARD_IND},
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{"RELEASE-GUARD SENDING", SS5_RELEASE_GUARD_REQ},
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{"ACKNOWLEDGE RECEIVED", SS5_ACKNOWLEDGE_IND},
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{"ACKNOWLEDGE SENDING", SS5_ACKNOWLEDGE_REQ},
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{"DOUBLE-SEIZURE RECEIVED", SS5_DOUBLE_SEIZURE_IND},
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{"DOUBLE-SEIZURE SENDING", SS5_DOUBLE_SEIZURE_REQ},
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{"DIALING RECEIVED", SS5_DIALING_IND},
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{"DIALING SENDING", SS5_DIALING_REQ},
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{"FORWARD-TRANSFER RECEIVED", SS5_FORWARD_TRANSFER_IND},
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{"FORWARD-TRANSFER SENDING", SS5_FORWARD_TRANSFER_REQ},
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{NULL, 0},
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};
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static void ss5_trace_header(struct mISDNport *mISDNport, class PmISDN *port, unsigned int msg, int channel)
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{
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int i;
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char msgtext[64];
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SCPY(msgtext, "<<UNKNOWN MESSAGE>>");
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/* select message and primitive text */
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i = 0;
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while(ss5_message[i].name) {
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// if (msg == L3_NOTIFY_REQ) printf("val = %x %s\n", isdn_message[i].value, isdn_message[i].name);
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if (ss5_message[i].value == msg) {
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SCPY(msgtext, ss5_message[i].name);
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break;
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}
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i++;
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}
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/* init trace with given values */
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start_trace(mISDNport?mISDNport->portnum:-1,
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mISDNport?(mISDNport->ifport?mISDNport->ifport->interface:NULL):NULL,
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port?numberrize_callerinfo(port->p_callerinfo.id, port->p_callerinfo.ntype, options.national, options.international):NULL,
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port?port->p_dialinginfo.id:NULL,
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(msg&1)?DIRECTION_OUT:DIRECTION_IN,
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CATEGORY_CH,
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port?port->p_serial:0,
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msgtext);
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add_trace("channel", NULL, "%d", channel);
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switch (port->p_type) {
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case PORT_TYPE_SS5_OUT:
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add_trace("state", NULL, "outgoing");
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break;
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case PORT_TYPE_SS5_IN:
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add_trace("state", NULL, "incomming");
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break;
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default:
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add_trace("state", NULL, "idle");
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break;
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}
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}
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/*
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* changes release tone into silence
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* this makes the line sound more authentic
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*/
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void Pss5::set_tone(const char *dir, const char *name)
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{
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if (name && !strcmp(name, "cause_10"))
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name = NULL;
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PmISDN::set_tone(dir, name);
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}
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/*
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* creation of static channels
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*/
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void ss5_create_channel(struct mISDNport *mISDNport, int i)
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{
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class Pss5 *ss5port;
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char portname[32];
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struct port_settings port_settings;
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SPRINT(portname, "%s-%d", mISDNport->name, i+1);
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memset(&port_settings, 0, sizeof(port_settings));
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SCPY(port_settings.tones_dir, options.tones_dir);
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ss5port = new Pss5(PORT_TYPE_SS5_IDLE, mISDNport, portname, &port_settings, mISDNport->ifport->interface, i + (i>=15) + 1, 1, B_MODE_TRANSPARENT);
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if (!ss5port)
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FATAL("No memory for Pss5 class.\n");
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if (!ss5port->p_m_b_channel)
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FATAL("No bchannel on given index.\n");
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/* connect channel */
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bchannel_event(mISDNport, ss5port->p_m_b_index, B_EVENT_USE);
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}
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/*
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* hunt for a free line
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* this function returns a port object in idle state.
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*/
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class Pss5 *ss5_hunt_line(struct mISDNport *mISDNport)
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{
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int i;
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class Port *port;
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class Pss5 *ss5port = NULL;
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struct select_channel *selchannel;
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PDEBUG(DEBUG_SS5, "Entered name=%s\n", mISDNport->name);
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selchannel = mISDNport->ifport->out_channel;
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while(selchannel) {
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switch(selchannel->channel) {
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case CHANNEL_FREE: /* free channel */
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case CHANNEL_ANY: /* any channel */
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for (i = 0; i < mISDNport->b_num; i++) {
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port = mISDNport->b_port[i];
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PDEBUG(DEBUG_SS5, "Checking port %p on index\n", port, i);
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if (!port)
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continue;
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if (port->p_type == PORT_TYPE_SS5_IN || port->p_type == PORT_TYPE_SS5_OUT)
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PDEBUG(DEBUG_SS5, "Checking port %s: channel %d not available, because port not idle type.\n",
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mISDNport->name, i);
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if (port->p_type != PORT_TYPE_SS5_IDLE)
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continue;
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ss5port = (class Pss5 *)port;
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/* is really idle ? */
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if (ss5port->p_state == PORT_STATE_IDLE
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&& ss5port->p_m_s_state == SS5_STATE_IDLE)
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return ss5port;
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PDEBUG(DEBUG_SS5, "Checking port %s: channel %d not available, because p_state=%d, ss5_state=%d.\n",
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mISDNport->name, i, ss5port->p_state,ss5port->p_m_s_state);
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}
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PDEBUG(DEBUG_SS5, "no free interface\n");
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return NULL;
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case CHANNEL_NO:
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break;
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default:
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if (selchannel->channel<1 || selchannel->channel==16)
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break;
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i = selchannel->channel-1-(selchannel->channel>=17);
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if (i >= mISDNport->b_num)
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break;
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port = mISDNport->b_port[i];
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if (!port)
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break;
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if (port->p_type == PORT_TYPE_SS5_IN || port->p_type == PORT_TYPE_SS5_OUT)
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PDEBUG(DEBUG_SS5, "Checking port %s: channel %d not available, because port not idle type.\n",
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mISDNport->name, i);
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if (port->p_type != PORT_TYPE_SS5_IDLE)
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break;
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ss5port = (class Pss5 *)port;
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/* is really idle ? */
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if (ss5port->p_state == PORT_STATE_IDLE
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&& ss5port->p_m_s_state == SS5_STATE_IDLE)
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return ss5port;
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PDEBUG(DEBUG_SS5, "Checking port %s: channel %d not available, because p_state=%d, ss5_state=%d.\n",
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mISDNport->name, i, ss5port->p_state,ss5port->p_m_s_state);
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}
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selchannel = selchannel->next;
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}
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PDEBUG(DEBUG_SS5, "no free interface in channel list\n");
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return NULL;
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}
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int queue_event(struct lcr_work *work, void *instance, int index);
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/*
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* constructor
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*/
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Pss5::Pss5(int type, struct mISDNport *mISDNport, char *portname, struct port_settings *settings, struct interface *interface, int channel, int exclusive, int mode) : PmISDN(type, mISDNport, portname, settings, interface, channel, exclusive, mode)
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{
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p_callerinfo.itype = (mISDNport->ifport->interface->extension)?INFO_ITYPE_ISDN_EXTENSION:INFO_ITYPE_ISDN;
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p_m_s_state = SS5_STATE_IDLE;
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p_m_s_signal = SS5_SIGNAL_NULL;
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p_m_s_dial[0] = '\0';
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p_m_s_digit_i = 0;
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p_m_s_pulsecount = 0;
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p_m_s_last_digit = ' ';
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p_m_s_last_digit_used = ' ';
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p_m_s_signal_loss = 0;
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p_m_s_decoder_count = 0;
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//p_m_s_decoder_buffer;
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p_m_s_sample_nr = 0;
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p_m_s_recog = 0;
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memset(&p_m_s_queue, 0, sizeof(p_m_s_queue));
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add_work(&p_m_s_queue, queue_event, this, 0);
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p_m_s_answer = 0;
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p_m_s_busy_flash = 0;
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p_m_s_clear_back = 0;
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memset(p_m_s_delay_digits, ' ', sizeof(p_m_s_delay_digits));
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memset(p_m_s_delay_mute, ' ', sizeof(p_m_s_delay_mute));
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/* turn on signalling receiver */
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inband_receive_on();
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PDEBUG(DEBUG_SS5, "Created new mISDNPort(%s). Currently %d objects use.\n", portname, mISDNport->use);
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}
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/*
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* destructor
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*/
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Pss5::~Pss5()
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{
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del_work(&p_m_s_queue);
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}
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/*
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* change ss5 states
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*/
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void Pss5::_new_ss5_state(int state, const char *func, int line)
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{
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PDEBUG(DEBUG_SS5, "%s(%s:%d): changing SS5 state from %s to %s\n", p_name, func, line, ss5_state_name[p_m_s_state], ss5_state_name[state]);
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p_m_s_state = state;
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p_m_s_signal = SS5_SIGNAL_NULL;
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if (p_m_s_state == SS5_STATE_IDLE && (p_m_s_answer || p_m_s_busy_flash || p_m_s_clear_back))
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trigger_work(&p_m_s_queue);
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}
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int queue_event(struct lcr_work *work, void *instance, int index)
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{
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class Pss5 *ss5port = (class Pss5 *)instance;
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if (ss5port->p_m_s_state == SS5_STATE_IDLE) {
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/* if answer signal is queued */
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if (ss5port->p_m_s_answer) {
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ss5port->p_m_s_answer = 0;
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/* start answer */
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ss5_trace_header(ss5port->p_m_mISDNport, ss5port, SS5_ANSWER_REQ, ss5port->p_m_b_channel);
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end_trace();
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ss5port->start_signal(SS5_STATE_ANSWER);
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}
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/* if busy-flash signal is queued */
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if (ss5port->p_m_s_busy_flash) {
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ss5port->p_m_s_busy_flash = 0;
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/* start busy-flash */
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ss5_trace_header(ss5port->p_m_mISDNport, ss5port, SS5_BUSY_FLASH_REQ, ss5port->p_m_b_channel);
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end_trace();
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ss5port->start_signal(SS5_STATE_BUSY_FLASH);
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}
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/* if clear-back signal is queued */
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if (ss5port->p_m_s_clear_back) {
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ss5port->p_m_s_clear_back = 0;
|
|
/* start clear-back */
|
|
ss5_trace_header(ss5port->p_m_mISDNport, ss5port, SS5_CLEAR_BACK_REQ, ss5port->p_m_b_channel);
|
|
end_trace();
|
|
ss5port->start_signal(SS5_STATE_CLEAR_BACK);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void Pss5::_new_ss5_signal(int signal, const char *func, int line)
|
|
{
|
|
if (p_m_s_signal)
|
|
PDEBUG(DEBUG_SS5, "%s(%s:%d): changing SS5 signal state from %s to %s\n", p_name, func, line, ss5_signal_name[p_m_s_signal], ss5_signal_name[signal]);
|
|
else
|
|
PDEBUG(DEBUG_SS5, "%s(%s:%d): changing SS5 signal state to %s\n", p_name, func, line, ss5_signal_name[signal]);
|
|
p_m_s_signal = signal;
|
|
}
|
|
|
|
|
|
/*
|
|
* signalling receiver
|
|
*
|
|
* this function will be called for every audio received.
|
|
*/
|
|
void Pss5::inband_receive(unsigned char *buffer, int len)
|
|
{
|
|
int count = 0, tocopy, space;
|
|
char digit;
|
|
|
|
again:
|
|
/* how much to copy ? */
|
|
tocopy = len - count;
|
|
space = SS5_DECODER_NPOINTS - p_m_s_decoder_count;
|
|
if (space < 0)
|
|
FATAL("p_m_s_decoder_count overflows\n");
|
|
if (space < tocopy)
|
|
tocopy = space;
|
|
/* copy an count */
|
|
memcpy(p_m_s_decoder_buffer+p_m_s_decoder_count, buffer+count, tocopy);
|
|
p_m_s_decoder_count += tocopy;
|
|
count += tocopy;
|
|
/* decoder buffer not completely filled ? */
|
|
if (tocopy < space)
|
|
return;
|
|
|
|
/* decode one frame */
|
|
digit = ss5_decode(p_m_s_decoder_buffer, SS5_DECODER_NPOINTS);
|
|
p_m_s_decoder_count = 0;
|
|
|
|
#ifdef DEBUG_DETECT
|
|
if (p_m_s_last_digit != digit && digit != ' ')
|
|
PDEBUG(DEBUG_SS5, "%s: detecting signal '%c' start (state=%s signal=%s)\n", p_name, digit, ss5_state_name[p_m_s_state], ss5_signal_name[p_m_s_signal]);
|
|
#endif
|
|
|
|
/* ignore short loss of signal, or change within one decode window */
|
|
if (p_m_s_signal_loss) {
|
|
if (digit == ' ') {
|
|
/* still lost */
|
|
if (p_m_s_signal_loss >= SS5_TIMER_SIGNAL_LOSS) {
|
|
#ifdef DEBUG_DETECT
|
|
PDEBUG(DEBUG_SS5, "%s: signal '%c' lost too long\n", p_name, p_m_s_last_digit);
|
|
#endif
|
|
/* long enough, we stop loss-timer */
|
|
p_m_s_signal_loss = 0;
|
|
} else {
|
|
/* not long enough, so we use last signal */
|
|
p_m_s_signal_loss += SS5_DECODER_NPOINTS;
|
|
digit = p_m_s_last_digit;
|
|
}
|
|
} else {
|
|
/* signal is back, we stop timer and store */
|
|
#ifdef DEBUG_DETECT
|
|
PDEBUG(DEBUG_SS5, "%s: signal '%c' lost, but continues with '%c'\n", p_name, p_m_s_last_digit, digit);
|
|
#endif
|
|
p_m_s_signal_loss = 0;
|
|
p_m_s_last_digit = digit;
|
|
}
|
|
} else {
|
|
if (p_m_s_last_digit != ' ' && digit == ' ') {
|
|
#ifdef DEBUG_DETECT
|
|
PDEBUG(DEBUG_SS5, "%s: signal '%c' lost\n", p_name, p_m_s_last_digit);
|
|
#endif
|
|
/* restore last digit until signal is really lost */
|
|
p_m_s_last_digit = digit;
|
|
/* starting to loose signal */
|
|
p_m_s_signal_loss = SS5_DECODER_NPOINTS;
|
|
} else if (digit != p_m_s_last_digit) {
|
|
/* digit changes, but we keep old digit until it is detected twice */
|
|
#ifdef DEBUG_DETECT
|
|
PDEBUG(DEBUG_SS5, "%s: signal '%c' changes to '%c'\n", p_name, p_m_s_last_digit, digit);
|
|
#endif
|
|
p_m_s_last_digit = digit;
|
|
digit = p_m_s_last_digit_used;
|
|
} else {
|
|
/* storing last signal, in case it is lost */
|
|
p_m_s_last_digit = digit;
|
|
}
|
|
}
|
|
p_m_s_last_digit_used = digit;
|
|
|
|
/* update mute */
|
|
if ((p_m_mISDNport->ss5 & SS5_FEATURE_SUPPRESS)) {
|
|
int mdigit;
|
|
memcpy(p_m_s_delay_mute, p_m_s_delay_mute+1, sizeof(p_m_s_delay_mute)-1);
|
|
p_m_s_delay_mute[sizeof(p_m_s_delay_mute)-1] = digit;
|
|
mdigit = p_m_s_delay_mute[0];
|
|
if (p_m_mute) {
|
|
/* mute is on */
|
|
if (mdigit != 'A' && mdigit != 'B' && mdigit != 'C')
|
|
mute_off();
|
|
} else {
|
|
/* mute is off */
|
|
if (mdigit == 'A' || mdigit == 'B' || mdigit == 'C')
|
|
mute_on();
|
|
}
|
|
}
|
|
|
|
/* delay decoded tones */
|
|
if ((p_m_mISDNport->ss5 & SS5_FEATURE_DELAY)) {
|
|
/* shift buffer */
|
|
memcpy(p_m_s_delay_digits, p_m_s_delay_digits+1, sizeof(p_m_s_delay_digits)-1);
|
|
/* first in */
|
|
p_m_s_delay_digits[sizeof(p_m_s_delay_digits)-1] = digit;
|
|
/* first out */
|
|
digit = p_m_s_delay_digits[0];
|
|
}
|
|
|
|
/* clear forward is always recognized */
|
|
if (digit == 'C' && p_m_s_state != SS5_STATE_CLEAR_FORWARD && p_m_s_state != SS5_STATE_RELEASE_GUARD) {
|
|
switch (p_type) {
|
|
case PORT_TYPE_SS5_OUT:
|
|
PDEBUG(DEBUG_SS5, "%s: received release-guard, waiting for recognition\n", p_name);
|
|
break;
|
|
case PORT_TYPE_SS5_IN:
|
|
PDEBUG(DEBUG_SS5, "%s: received clear-forward, waiting for recognition\n", p_name);
|
|
break;
|
|
default:
|
|
PDEBUG(DEBUG_SS5, "%s: received clear-forward in idle state, waiting for recognition\n", p_name);
|
|
break;
|
|
}
|
|
new_ss5_state(SS5_STATE_RELEASE_GUARD);
|
|
new_ss5_signal(SS5_SIGNAL_RECEIVE_RECOG);
|
|
p_m_s_recog = 0;
|
|
} else
|
|
switch(p_m_s_state) {
|
|
case SS5_STATE_IDLE:
|
|
/* seizing only recognized in port idle state */
|
|
if (p_state == PORT_STATE_IDLE) {
|
|
if (digit != 'A')
|
|
break;
|
|
seize:
|
|
PDEBUG(DEBUG_SS5, "%s: received seize, waiting for recognition\n", p_name);
|
|
p_type = PORT_TYPE_SS5_IN;
|
|
new_ss5_state(SS5_STATE_PROCEED_TO_SEND);
|
|
new_ss5_signal(SS5_SIGNAL_RECEIVE_RECOG);
|
|
p_m_s_recog = 0;
|
|
break;
|
|
}
|
|
/* other signals */
|
|
if (digit == 'A') {
|
|
if (p_type != PORT_TYPE_SS5_OUT)
|
|
break;
|
|
PDEBUG(DEBUG_SS5, "%s: received answer, waiting for recognition\n", p_name);
|
|
new_ss5_state(SS5_STATE_ACK_ANSWER);
|
|
new_ss5_signal(SS5_SIGNAL_RECEIVE_RECOG);
|
|
p_m_s_recog = 0;
|
|
break;
|
|
}
|
|
if (digit == 'B') {
|
|
if (p_type == PORT_TYPE_SS5_IN) {
|
|
if ((p_m_mISDNport->ss5 & SS5_FEATURE_BELL)) {
|
|
new_ss5_state(SS5_STATE_DIAL_IN_PULSE); /* go pulsing state */
|
|
new_ss5_signal(SS5_SIGNAL_PULSE_OFF); /* we are starting with pulse off */
|
|
p_m_s_pulsecount = 0; /* init pulse counter */
|
|
p_m_s_dial[0] = '\0'; /* init dial string */
|
|
pulse_ind(1); /* also inits recogition timer... */
|
|
break;
|
|
}
|
|
PDEBUG(DEBUG_SS5, "%s: received forward-transfer, waiting for recognition\n", p_name);
|
|
/* forward transfer on incomming lines */
|
|
new_ss5_state(SS5_STATE_FORWARD_TRANSFER);
|
|
new_ss5_signal(SS5_SIGNAL_RECEIVE_RECOG);
|
|
p_m_s_recog = 0;
|
|
break;
|
|
}
|
|
if (p_state == PORT_STATE_CONNECT) {
|
|
PDEBUG(DEBUG_SS5, "%s: received clear-back, waiting for recognition\n", p_name);
|
|
new_ss5_state(SS5_STATE_ACK_CLEAR_BACK);
|
|
} else {
|
|
PDEBUG(DEBUG_SS5, "%s: received busy-flash, waiting for recognition\n", p_name);
|
|
new_ss5_state(SS5_STATE_ACK_BUSY_FLASH);
|
|
}
|
|
new_ss5_signal(SS5_SIGNAL_RECEIVE_RECOG);
|
|
p_m_s_recog = 0;
|
|
break;
|
|
}
|
|
/* dialing only allowed in incomming setup state */
|
|
if (p_state == PORT_STATE_IN_SETUP) {
|
|
if (!strchr("1234567890*#abc", digit))
|
|
break;
|
|
PDEBUG(DEBUG_SS5, "%s: received dialing start with '%c'\n", p_name, digit);
|
|
new_ss5_state(SS5_STATE_DIAL_IN);
|
|
new_ss5_signal(SS5_SIGNAL_DIGIT_ON);
|
|
p_m_s_dial[0] = '\0';
|
|
digit_ind(digit);
|
|
break;
|
|
}
|
|
break;
|
|
/* sending seizing */
|
|
case SS5_STATE_SEIZING:
|
|
switch (p_m_s_signal) {
|
|
case SS5_SIGNAL_SEND_ON:
|
|
if (digit == 'A') { /* double seize */
|
|
PDEBUG(DEBUG_SS5, "%s: received double seizure\n", p_name, digit);
|
|
double_seizure_ind();
|
|
break;
|
|
}
|
|
if (digit == 'B') {
|
|
PDEBUG(DEBUG_SS5, "%s: received answer to outgoing seize, waiting for recognition\n", p_name);
|
|
/* set recognition timer */
|
|
new_ss5_signal(SS5_SIGNAL_SEND_ON_RECOG);
|
|
p_m_s_recog = 0;
|
|
}
|
|
break;
|
|
case SS5_SIGNAL_SEND_ON_RECOG:
|
|
if (digit != 'B') { /* seize */
|
|
PDEBUG(DEBUG_SS5, "%s: answer to outgoing seize is gone before recognition\n", p_name);
|
|
new_ss5_signal(SS5_SIGNAL_SEND_ON);
|
|
// p_m_s_sample_nr = 0;
|
|
// inband_send_on();
|
|
break;
|
|
}
|
|
p_m_s_recog += SS5_DECODER_NPOINTS;
|
|
if (p_m_s_recog < SS5_TIMER_RECOG_SEIZE)
|
|
break;
|
|
PDEBUG(DEBUG_SS5, "%s: answer to outgoing seize recognized, turning off, waiting for recognition\n", p_name);
|
|
new_ss5_signal(SS5_SIGNAL_SEND_OFF);
|
|
break;
|
|
case SS5_SIGNAL_SEND_OFF:
|
|
if (digit == 'B')
|
|
break;
|
|
PDEBUG(DEBUG_SS5, "%s: outgoing seizure is complete, proceeding...\n", p_name);
|
|
new_ss5_state(SS5_STATE_IDLE);
|
|
proceed_to_send_ind();
|
|
break;
|
|
}
|
|
break;
|
|
/* answer to seize */
|
|
case SS5_STATE_PROCEED_TO_SEND:
|
|
if (p_m_s_signal == SS5_SIGNAL_RECEIVE_RECOG) {
|
|
if (digit != 'A') {
|
|
PDEBUG(DEBUG_SS5, "%s: incomming seize is gone before recognition\n", p_name);
|
|
new_ss5_state(SS5_STATE_IDLE);
|
|
p_type = PORT_TYPE_SS5_IDLE;
|
|
break;
|
|
}
|
|
p_m_s_recog += SS5_DECODER_NPOINTS;
|
|
if (p_m_s_recog < SS5_TIMER_RECOG_SEIZE)
|
|
break;
|
|
PDEBUG(DEBUG_SS5, "%s: incomming seize is recognized, responding...\n", p_name);
|
|
new_ss5_signal(SS5_SIGNAL_RECEIVE);
|
|
p_m_s_sample_nr = 0;
|
|
inband_send_on();
|
|
break;
|
|
}
|
|
if (digit != 'A') {
|
|
PDEBUG(DEBUG_SS5, "%s: incomming seize is gone after responding\n", p_name);
|
|
new_ss5_state(SS5_STATE_IDLE);
|
|
seizing_ind();
|
|
}
|
|
break;
|
|
/* sending busy flash / answer / clear-back */
|
|
case SS5_STATE_BUSY_FLASH:
|
|
case SS5_STATE_ANSWER:
|
|
case SS5_STATE_CLEAR_BACK:
|
|
switch (p_m_s_signal) {
|
|
case SS5_SIGNAL_SEND_ON:
|
|
if (digit == 'A') {
|
|
PDEBUG(DEBUG_SS5, "%s: received acknowledge, waiting for recognition\n", p_name);
|
|
/* set recognition timer */
|
|
new_ss5_signal(SS5_SIGNAL_SEND_ON_RECOG);
|
|
p_m_s_recog = 0;
|
|
}
|
|
break;
|
|
case SS5_SIGNAL_SEND_ON_RECOG:
|
|
if (digit != 'A') {
|
|
PDEBUG(DEBUG_SS5, "%s: acknowledge is gone before recognition\n", p_name);
|
|
new_ss5_signal(SS5_SIGNAL_SEND_ON);
|
|
// p_m_s_sample_nr = 0;
|
|
// inband_send_on();
|
|
break;
|
|
}
|
|
p_m_s_recog += SS5_DECODER_NPOINTS;
|
|
if (p_m_s_recog < SS5_TIMER_RECOG_OTHER)
|
|
break;
|
|
PDEBUG(DEBUG_SS5, "%s: acknowledge recognized, turning off, waiting for recognition\n", p_name);
|
|
new_ss5_signal(SS5_SIGNAL_SEND_OFF);
|
|
break;
|
|
case SS5_SIGNAL_SEND_OFF:
|
|
if (digit == 'A')
|
|
break;
|
|
PDEBUG(DEBUG_SS5, "%s: outgoing signal is complete\n", p_name);
|
|
new_ss5_state(SS5_STATE_IDLE);
|
|
break;
|
|
}
|
|
break;
|
|
/* answer to busy-flash / clear back */
|
|
case SS5_STATE_ACK_BUSY_FLASH:
|
|
case SS5_STATE_ACK_CLEAR_BACK:
|
|
if (p_m_s_signal == SS5_SIGNAL_RECEIVE_RECOG) {
|
|
if (digit != 'B') {
|
|
PDEBUG(DEBUG_SS5, "%s: incomming clear-back/busy-flash is gone before recognition\n", p_name);
|
|
new_ss5_state(SS5_STATE_IDLE);
|
|
break;
|
|
}
|
|
p_m_s_recog += SS5_DECODER_NPOINTS;
|
|
if (p_m_s_recog < SS5_TIMER_RECOG_OTHER)
|
|
break;
|
|
PDEBUG(DEBUG_SS5, "%s: incomming clear-back/busy-flash is recognized, responding...\n", p_name);
|
|
new_ss5_signal(SS5_SIGNAL_RECEIVE);
|
|
p_m_s_sample_nr = 0;
|
|
inband_send_on();
|
|
break;
|
|
}
|
|
if (digit != 'B') {
|
|
PDEBUG(DEBUG_SS5, "%s: incomming clear-back/busy-flash is gone after responding\n", p_name);
|
|
new_ss5_state(SS5_STATE_IDLE);
|
|
if (p_m_s_state == SS5_STATE_ACK_BUSY_FLASH)
|
|
busy_flash_ind();
|
|
else
|
|
clear_back_ind();
|
|
}
|
|
break;
|
|
/* answer to answer */
|
|
case SS5_STATE_ACK_ANSWER:
|
|
if (p_m_s_signal == SS5_SIGNAL_RECEIVE_RECOG) {
|
|
if (digit != 'A') {
|
|
PDEBUG(DEBUG_SS5, "%s: incomming answer is gone before recognition\n", p_name);
|
|
new_ss5_state(SS5_STATE_IDLE);
|
|
break;
|
|
}
|
|
p_m_s_recog += SS5_DECODER_NPOINTS;
|
|
if (p_m_s_recog < SS5_TIMER_RECOG_OTHER)
|
|
break;
|
|
PDEBUG(DEBUG_SS5, "%s: incomming answer is recognized, responding...\n", p_name);
|
|
new_ss5_signal(SS5_SIGNAL_RECEIVE);
|
|
p_m_s_sample_nr = 0;
|
|
inband_send_on();
|
|
break;
|
|
}
|
|
if (digit != 'A') {
|
|
PDEBUG(DEBUG_SS5, "%s: incomming answer is gone after responding\n", p_name);
|
|
new_ss5_state(SS5_STATE_IDLE);
|
|
answer_ind();
|
|
}
|
|
break;
|
|
/* sending clear-forward */
|
|
case SS5_STATE_CLEAR_FORWARD:
|
|
switch (p_m_s_signal) {
|
|
case SS5_SIGNAL_SEND_ON:
|
|
if (digit == 'C') {
|
|
PDEBUG(DEBUG_SS5, "%s: received answer to clear-forward, waiting for recognition\n", p_name);
|
|
/* set recognition timer */
|
|
new_ss5_signal(SS5_SIGNAL_SEND_ON_RECOG);
|
|
p_m_s_recog = 0;
|
|
}
|
|
break;
|
|
case SS5_SIGNAL_SEND_ON_RECOG:
|
|
if (digit != 'C') {
|
|
PDEBUG(DEBUG_SS5, "%s: answer to clear-forward is gone before recognition\n", p_name);
|
|
new_ss5_signal(SS5_SIGNAL_SEND_ON);
|
|
// p_m_s_sample_nr = 0;
|
|
// inband_send_on();
|
|
break;
|
|
}
|
|
p_m_s_recog += SS5_DECODER_NPOINTS;
|
|
if (p_m_s_recog < SS5_TIMER_RECOG_OTHER)
|
|
break;
|
|
PDEBUG(DEBUG_SS5, "%s: answer to clear-forward recognized, turning off, waiting for recognition\n", p_name);
|
|
new_ss5_signal(SS5_SIGNAL_SEND_OFF);
|
|
break;
|
|
case SS5_SIGNAL_SEND_OFF:
|
|
if (digit == 'A') {
|
|
PDEBUG(DEBUG_SS5, "%s: received seize right after clear-forward answer, continue with seize\n", p_name);
|
|
new_state(PORT_STATE_IDLE);
|
|
goto seize;
|
|
}
|
|
if (digit == 'C')
|
|
break;
|
|
PDEBUG(DEBUG_SS5, "%s: answer to clear-forward is complete\n", p_name);
|
|
release_guard_ind();
|
|
new_ss5_signal(SS5_SIGNAL_DELAY);
|
|
p_m_s_recog = 0; /* use recog to delay */
|
|
PDEBUG(DEBUG_SS5, "%s: answer to clear-forward on outgoing interface starting delay to prevent ping-pong\n", p_name);
|
|
break;
|
|
case SS5_SIGNAL_DELAY:
|
|
if (digit == 'A') {
|
|
PDEBUG(DEBUG_SS5, "%s: received seize right after clear-forward answer, continue with seize\n", p_name);
|
|
new_state(PORT_STATE_IDLE);
|
|
goto seize;
|
|
}
|
|
p_m_s_recog += SS5_DECODER_NPOINTS;
|
|
if (p_m_s_recog < SS5_TIMER_RELEASE_DELAY)
|
|
break;
|
|
PDEBUG(DEBUG_SS5, "%s: delay time over, going idle\n", p_name);
|
|
new_ss5_state(SS5_STATE_IDLE);
|
|
new_state(PORT_STATE_IDLE);
|
|
p_type = PORT_TYPE_SS5_IDLE;
|
|
break;
|
|
}
|
|
break;
|
|
/* answer to release-guard*/
|
|
case SS5_STATE_RELEASE_GUARD:
|
|
switch (p_m_s_signal) {
|
|
case SS5_SIGNAL_RECEIVE_RECOG:
|
|
if (digit != 'C') {
|
|
if (p_type == PORT_TYPE_SS5_OUT)
|
|
PDEBUG(DEBUG_SS5, "%s: incomming release-guard is gone before recognition\n", p_name);
|
|
else
|
|
PDEBUG(DEBUG_SS5, "%s: incomming clear forward is gone before recognition\n", p_name);
|
|
new_ss5_state(SS5_STATE_IDLE);
|
|
break;
|
|
}
|
|
p_m_s_recog += SS5_DECODER_NPOINTS;
|
|
if (p_m_s_recog < SS5_TIMER_RECOG_OTHER)
|
|
break;
|
|
if (p_type == PORT_TYPE_SS5_OUT)
|
|
PDEBUG(DEBUG_SS5, "%s: incomming release-guard is recognized, responding...\n", p_name);
|
|
else
|
|
PDEBUG(DEBUG_SS5, "%s: incomming clear-forward is recognized, responding...\n", p_name);
|
|
new_state(PORT_STATE_RELEASE);
|
|
new_ss5_signal(SS5_SIGNAL_RECEIVE);
|
|
p_m_s_sample_nr = 0;
|
|
inband_send_on();
|
|
break;
|
|
case SS5_SIGNAL_RECEIVE:
|
|
if (digit == 'C'
|
|
|| p_m_s_sample_nr < 256) /* small hack to keep answer for at least some time */
|
|
break;
|
|
#if 0
|
|
if (digit == 'A') {
|
|
PDEBUG(DEBUG_SS5, "%s: received seize right after clear-forward is received\n", p_name);
|
|
new_state(PORT_STATE_IDLE);
|
|
goto seize;
|
|
}
|
|
#endif
|
|
/* if clear forward stops right after recognition on the incomming side,
|
|
* the release guard signal stops and may be too short to be recognized at the outgoing side.
|
|
* to prevent this, a timer can be started to force a release guard that is long
|
|
* enough to be recognized on the outgoing side.
|
|
* this will prevent braking via blueboxing (other tricks may still be possible).
|
|
*/
|
|
if ((p_m_mISDNport->ss5 & SS5_FEATURE_RELEASEGUARDTIMER)
|
|
&& p_m_s_sample_nr < SS5_TIMER_RELEASE_GUARD)
|
|
break;
|
|
if (p_type == PORT_TYPE_SS5_OUT)
|
|
PDEBUG(DEBUG_SS5, "%s: incomming release-guard is gone after responding\n", p_name);
|
|
else
|
|
PDEBUG(DEBUG_SS5, "%s: incomming clear-forward is gone after responding\n", p_name);
|
|
if (p_type == PORT_TYPE_SS5_OUT) {
|
|
release_guard_ind();
|
|
new_ss5_signal(SS5_SIGNAL_DELAY);
|
|
p_m_s_recog = 0; /* use recog to delay */
|
|
PDEBUG(DEBUG_SS5, "%s: incomming release-guard on outgoing interface starting delay to prevent ping-pong\n", p_name);
|
|
} else {
|
|
clear_forward_ind();
|
|
new_ss5_state(SS5_STATE_IDLE);
|
|
}
|
|
break;
|
|
case SS5_SIGNAL_DELAY:
|
|
if (digit == 'A') {
|
|
PDEBUG(DEBUG_SS5, "%s: received seize right after release guard is gone, continue with seize\n", p_name);
|
|
new_state(PORT_STATE_IDLE);
|
|
goto seize;
|
|
}
|
|
p_m_s_recog += SS5_DECODER_NPOINTS;
|
|
if (p_m_s_recog < SS5_TIMER_RELEASE_DELAY)
|
|
break;
|
|
PDEBUG(DEBUG_SS5, "%s: delay time over, going idle\n", p_name);
|
|
new_ss5_state(SS5_STATE_IDLE);
|
|
new_state(PORT_STATE_IDLE);
|
|
p_type = PORT_TYPE_SS5_IDLE;
|
|
break;
|
|
}
|
|
break;
|
|
/* wait time to recognize forward transfer */
|
|
case SS5_STATE_FORWARD_TRANSFER:
|
|
if (p_m_s_signal == SS5_SIGNAL_RECEIVE_RECOG) {
|
|
if (digit != 'B') {
|
|
PDEBUG(DEBUG_SS5, "%s: incomming forward-transfer is gone before recognition\n", p_name);
|
|
new_ss5_state(SS5_STATE_IDLE);
|
|
break;
|
|
}
|
|
p_m_s_recog += SS5_DECODER_NPOINTS;
|
|
if (p_m_s_recog < SS5_TIMER_RECOG_OTHER)
|
|
break;
|
|
PDEBUG(DEBUG_SS5, "%s: incomming forward-transfer is recognized, responding, if BELL feature was selected...\n", p_name);
|
|
new_ss5_signal(SS5_SIGNAL_RECEIVE);
|
|
#if 0
|
|
p_m_s_sample_nr = 0;
|
|
inband_send_on();
|
|
#endif
|
|
break;
|
|
}
|
|
if (digit != 'B') {
|
|
PDEBUG(DEBUG_SS5, "%s: incomming forward-transfer is gone after recognition\n", p_name);
|
|
new_ss5_state(SS5_STATE_IDLE);
|
|
forward_transfer_ind();
|
|
break;
|
|
}
|
|
break;
|
|
/* dialing is received */
|
|
case SS5_STATE_DIAL_IN:
|
|
if (strchr("1234567890*#abc", digit)) {
|
|
if (p_m_s_signal != SS5_SIGNAL_DIGIT_PAUSE)
|
|
break;
|
|
PDEBUG(DEBUG_SS5, "%s: incomming digit '%c' is recognized\n", p_name, digit);
|
|
new_ss5_signal(SS5_SIGNAL_DIGIT_ON);
|
|
digit_ind(digit);
|
|
} else {
|
|
if (p_m_s_signal != SS5_SIGNAL_DIGIT_ON)
|
|
break;
|
|
PDEBUG(DEBUG_SS5, "%s: incomming digit is gone after recognition\n", p_name);
|
|
new_ss5_signal(SS5_SIGNAL_DIGIT_PAUSE);
|
|
}
|
|
break;
|
|
case SS5_STATE_DIAL_IN_PULSE:
|
|
if (digit == 'B')
|
|
pulse_ind(1);
|
|
else
|
|
pulse_ind(0);
|
|
break;
|
|
}
|
|
|
|
/* something more to decode ? */
|
|
if (count != len)
|
|
goto again;
|
|
}
|
|
|
|
|
|
/*
|
|
* signalling sender
|
|
*
|
|
* this function generates tones and assembles dial string with digits and pause
|
|
* the result is sent to mISDN. it uses the ss5_encode() function.
|
|
* except for dialing and forward-transfer, tones are continuous and will not change state.
|
|
*/
|
|
int Pss5::inband_send(unsigned char *buffer, int len)
|
|
{
|
|
int count = 0; /* sample counter */
|
|
int duration;
|
|
char digit;
|
|
int tocode, tosend;
|
|
|
|
switch(p_m_s_state) {
|
|
/* turn off transmitter in idle state */
|
|
case SS5_STATE_IDLE:
|
|
inband_send_off();
|
|
break;
|
|
|
|
case SS5_STATE_SEIZING:
|
|
if (p_m_s_signal != SS5_SIGNAL_SEND_ON
|
|
&& p_m_s_signal != SS5_SIGNAL_SEND_ON_RECOG)
|
|
break;
|
|
duration = -1; /* continuous */
|
|
digit = 'A';
|
|
send:
|
|
/* how much samples do we have left */
|
|
if (duration < 0)
|
|
tocode = len;
|
|
else
|
|
tocode = duration - p_m_s_sample_nr;
|
|
if (tocode > 0) {
|
|
if (tocode > len)
|
|
tocode = len;
|
|
ss5_encode(buffer, tocode, digit, p_m_s_sample_nr);
|
|
/* increase counters */
|
|
p_m_s_sample_nr += tocode;
|
|
count += tocode;
|
|
}
|
|
/* more to come ? */
|
|
if (duration > 0 && p_m_s_sample_nr >= duration) {
|
|
PDEBUG(DEBUG_SS5, "%s: sending tone '%c' complete, starting delay\n", p_name, digit);
|
|
if (p_m_s_state == SS5_STATE_DOUBLE_SEIZE) {
|
|
do_release(CAUSE_NOCHANNEL, LOCATION_PRIVATE_LOCAL);
|
|
break;
|
|
}
|
|
new_ss5_state(SS5_STATE_DELAY);
|
|
p_m_s_sample_nr = 0;
|
|
}
|
|
#if 0
|
|
/* stop sending if too long */
|
|
if (duration < 0 && p_m_s_sample_nr >= SS5_TIMER_MAX_SIGNAL) {
|
|
PDEBUG(DEBUG_SS5, "%s: sending tone '%c' too long, stopping\n", p_name, digit);
|
|
inband_send_off();
|
|
break;
|
|
}
|
|
#endif
|
|
break;
|
|
/* incomming seizing */
|
|
case SS5_STATE_PROCEED_TO_SEND:
|
|
if (p_m_s_signal != SS5_SIGNAL_RECEIVE)
|
|
break;
|
|
duration = -1; /* continuous */
|
|
digit = 'B';
|
|
goto send;
|
|
|
|
case SS5_STATE_BUSY_FLASH:
|
|
case SS5_STATE_CLEAR_BACK:
|
|
if (p_m_s_signal != SS5_SIGNAL_SEND_ON
|
|
&& p_m_s_signal != SS5_SIGNAL_SEND_ON_RECOG)
|
|
break;
|
|
duration = -1; /* continuous */
|
|
digit = 'B';
|
|
goto send;
|
|
|
|
case SS5_STATE_ANSWER:
|
|
if (p_m_s_signal != SS5_SIGNAL_SEND_ON
|
|
&& p_m_s_signal != SS5_SIGNAL_SEND_ON_RECOG)
|
|
break;
|
|
duration = -1; /* continuous */
|
|
digit = 'A';
|
|
goto send;
|
|
|
|
case SS5_STATE_ACK_BUSY_FLASH:
|
|
case SS5_STATE_ACK_ANSWER:
|
|
case SS5_STATE_ACK_CLEAR_BACK:
|
|
if (p_m_s_signal != SS5_SIGNAL_RECEIVE)
|
|
break;
|
|
duration = -1; /* continuous */
|
|
digit = 'A';
|
|
goto send;
|
|
|
|
#if 0
|
|
case SS5_STATE_FORWARD_TRANSFER:
|
|
if (p_m_s_signal != SS5_SIGNAL_RECEIVE)
|
|
break;
|
|
/* only on bell systems continue and acknowledge tone */
|
|
if (!(p_m_mISDNport->ss5 & SS5_FEATURE_BELL))
|
|
break;
|
|
duration = SS5_TIMER_FORWARD;
|
|
digit = 'B';
|
|
goto send;
|
|
#endif
|
|
|
|
case SS5_STATE_CLEAR_FORWARD:
|
|
if (p_m_s_signal != SS5_SIGNAL_SEND_ON
|
|
&& p_m_s_signal != SS5_SIGNAL_SEND_ON_RECOG)
|
|
break;
|
|
duration = -1; /* continuous */
|
|
digit = 'C';
|
|
goto send;
|
|
|
|
case SS5_STATE_RELEASE_GUARD:
|
|
if (p_m_s_signal != SS5_SIGNAL_RECEIVE
|
|
&& p_m_s_signal != SS5_SIGNAL_DELAY)
|
|
break;
|
|
/* prevent from sending release guard too long */
|
|
if (p_m_s_sample_nr >= SS5_TIMER_RELEASE_MAX)
|
|
break;
|
|
duration = -1; /* continuous */
|
|
digit = 'C';
|
|
goto send;
|
|
|
|
case SS5_STATE_DIAL_OUT:
|
|
if ((p_m_mISDNport->ss5 & SS5_FEATURE_PULSEDIALING))
|
|
count = inband_dial_pulse(buffer, len, count);
|
|
else
|
|
count = inband_dial_mf(buffer, len, count);
|
|
break;
|
|
break;
|
|
|
|
case SS5_STATE_DELAY:
|
|
tosend = len - count;
|
|
memset(buffer+count, audio_s16_to_law[0], tosend);
|
|
p_m_s_sample_nr += tosend;
|
|
count += tosend;
|
|
if (p_m_s_sample_nr >= SS5_TIMER_AFTER_SIGNAL) {
|
|
PDEBUG(DEBUG_SS5, "%s: delay done, ready for next signal\n", p_name);
|
|
new_ss5_state(SS5_STATE_IDLE);
|
|
inband_send_off();
|
|
}
|
|
break;
|
|
|
|
case SS5_STATE_DOUBLE_SEIZE:
|
|
duration = SS5_TIMER_DOUBLE_SEIZE;
|
|
digit = 'A';
|
|
goto send;
|
|
|
|
/* nothing to send */
|
|
default:
|
|
PERROR("inband signalling is turned on, but no signal is processed here.");
|
|
new_ss5_state(SS5_STATE_IDLE);
|
|
inband_send_off();
|
|
return 0;
|
|
}
|
|
|
|
/* return (partly) filled buffer */
|
|
return count;
|
|
}
|
|
|
|
|
|
int Pss5::inband_dial_mf(unsigned char *buffer, int len, int count)
|
|
{
|
|
int duration;
|
|
int tocode, tosend;
|
|
char digit;
|
|
|
|
/* dialing
|
|
*
|
|
* p_m_s_dial: digits to be dialed
|
|
* p_m_s_digit_i: current digit counter
|
|
* p_m_s_signal: current signal state
|
|
* p_m_s_sample_nr: current sample number
|
|
*/
|
|
again:
|
|
/* get digit and duration */
|
|
digit = p_m_s_dial[p_m_s_digit_i];
|
|
if (!digit) { /* if end of string reached */
|
|
new_ss5_state(SS5_STATE_DELAY);
|
|
p_m_s_sample_nr = 0;
|
|
return count;
|
|
}
|
|
if (p_m_s_signal == SS5_SIGNAL_DIGIT_ON) {
|
|
if (!p_m_s_digit_i) // first digit
|
|
duration = SS5_TIMER_KP;
|
|
else
|
|
duration = SS5_TIMER_DIGIT;
|
|
} else {
|
|
duration = SS5_TIMER_PAUSE;
|
|
}
|
|
/* end of digit/pause ? */
|
|
if (p_m_s_sample_nr >= duration) {
|
|
p_m_s_sample_nr = 0;
|
|
if (p_m_s_signal == SS5_SIGNAL_DIGIT_PAUSE)
|
|
new_ss5_signal(SS5_SIGNAL_DIGIT_ON);
|
|
else {
|
|
new_ss5_signal(SS5_SIGNAL_DIGIT_PAUSE);
|
|
p_m_s_digit_i++;
|
|
goto again;
|
|
}
|
|
}
|
|
/* how much samples do we have left */
|
|
tosend = len - count;
|
|
tocode = duration - p_m_s_sample_nr;
|
|
if (tocode < 0)
|
|
FATAL("sample_nr overrun duration");
|
|
if (tosend < tocode)
|
|
tocode = tosend;
|
|
/* digit or pause */
|
|
if (p_m_s_signal == SS5_SIGNAL_DIGIT_PAUSE) {
|
|
memset(buffer+count, audio_s16_to_law[0], tocode);
|
|
// printf("coding pause %d bytes\n", tocode);
|
|
} else {
|
|
ss5_encode(buffer+count, tocode, digit, p_m_s_sample_nr);
|
|
// printf("coding digit '%c' %d bytes\n", digit, tocode);
|
|
}
|
|
/* increase counters */
|
|
p_m_s_sample_nr += tocode;
|
|
count += tocode;
|
|
/* can we take more ? */
|
|
if (len != count)
|
|
goto again;
|
|
return count;
|
|
}
|
|
|
|
|
|
int Pss5::inband_dial_pulse(unsigned char *buffer, int len, int count)
|
|
{
|
|
int tocode, tosend;
|
|
int duration;
|
|
char digit;
|
|
|
|
/* dialing
|
|
*
|
|
* p_m_s_dial: digits to be dialed
|
|
* p_m_s_digit_i: current digit counter
|
|
* p_m_s_signal: current signal state
|
|
* p_m_s_sample_nr: current sample number
|
|
*/
|
|
again:
|
|
/* get digit */
|
|
digit = p_m_s_dial[p_m_s_digit_i];
|
|
if (!digit) { /* if end of string reached */
|
|
new_ss5_state(SS5_STATE_DELAY);
|
|
p_m_s_sample_nr = 0;
|
|
return count;
|
|
}
|
|
/* convert digit to pulse */
|
|
switch (digit) {
|
|
case '1':
|
|
case '2':
|
|
case '3':
|
|
case '4':
|
|
case '5':
|
|
case '6':
|
|
case '7':
|
|
case '8':
|
|
case '9':
|
|
digit -= '0';
|
|
break;
|
|
case '0':
|
|
digit = 10;
|
|
break;
|
|
case '*':
|
|
digit = 11;
|
|
break;
|
|
case '#':
|
|
digit = 12;
|
|
break;
|
|
default:
|
|
p_m_s_digit_i++;
|
|
goto again;
|
|
}
|
|
/* get duration */
|
|
if (p_m_s_signal == SS5_SIGNAL_DIGIT_ON) {
|
|
if (p_m_s_pulsecount & 1)
|
|
duration = BELL_TIMER_MAKE; /* loop closed */
|
|
else
|
|
duration = BELL_TIMER_BREAK; /* loop open, tone */
|
|
} else {
|
|
duration = BELL_TIMER_PAUSE;
|
|
}
|
|
/* end of digit/pause ? */
|
|
if (p_m_s_sample_nr >= duration) {
|
|
p_m_s_sample_nr = 0;
|
|
if (p_m_s_signal == SS5_SIGNAL_DIGIT_PAUSE) {
|
|
new_ss5_signal(SS5_SIGNAL_DIGIT_ON);
|
|
PDEBUG(DEBUG_SS5, "%s: starting pusling digit '%c'\n", p_name, digit);
|
|
} else {
|
|
p_m_s_pulsecount++; /* toggle pulse */
|
|
if (!(p_m_s_pulsecount & 1)) {
|
|
/* pulse now on again, but if end is reached... */
|
|
if (p_m_s_pulsecount == (digit<<1)) {
|
|
new_ss5_signal(SS5_SIGNAL_DIGIT_PAUSE);
|
|
p_m_s_pulsecount = 0;
|
|
p_m_s_digit_i++;
|
|
goto again;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
/* how much samples do we have left */
|
|
tosend = len - count;
|
|
tocode = duration - p_m_s_sample_nr;
|
|
if (tocode < 0)
|
|
FATAL("sample_nr overrun duration");
|
|
if (tosend < tocode)
|
|
tocode = tosend;
|
|
/* digit or pause */
|
|
if (p_m_s_signal == SS5_SIGNAL_DIGIT_PAUSE
|
|
|| (p_m_s_pulsecount&1)) /* ...or currently on and no pulse */
|
|
memset(buffer+count, audio_s16_to_law[0], tocode);
|
|
else
|
|
ss5_encode(buffer+count, tocode, 'B', p_m_s_sample_nr);
|
|
/* increase counters */
|
|
p_m_s_sample_nr += tocode;
|
|
count += tocode;
|
|
/* can we take more ? */
|
|
if (len != count)
|
|
goto again;
|
|
return count;
|
|
}
|
|
|
|
|
|
/*
|
|
* start signal
|
|
*/
|
|
void Pss5::start_signal(int state)
|
|
{
|
|
PDEBUG(DEBUG_SS5, "%s: starting singal '%s'\n", p_name, ss5_state_name[state]);
|
|
/* start signal */
|
|
new_ss5_state(state);
|
|
if (state == SS5_STATE_DIAL_OUT) {
|
|
p_m_s_digit_i = 0;
|
|
p_m_s_pulsecount = 0;
|
|
new_ss5_signal(SS5_SIGNAL_DIGIT_ON);
|
|
} else
|
|
new_ss5_signal(SS5_SIGNAL_SEND_ON);
|
|
|
|
/* double seize must continue the current seize tone, so don't reset sample_nr */
|
|
if (state != SS5_STATE_DOUBLE_SEIZE) {
|
|
/* (re)set sound phase to 0 */
|
|
p_m_s_sample_nr = 0;
|
|
}
|
|
|
|
/* turn on inband transmitter */
|
|
inband_send_on();
|
|
}
|
|
|
|
|
|
/*
|
|
* handles all indications
|
|
*/
|
|
void Pss5::seizing_ind(void)
|
|
{
|
|
ss5_trace_header(p_m_mISDNport, this, SS5_SEIZING_IND, p_m_b_channel);
|
|
end_trace();
|
|
|
|
new_state(PORT_STATE_IN_SETUP);
|
|
set_tone("", "noise");
|
|
}
|
|
|
|
void Pss5::digit_ind(char digit)
|
|
{
|
|
int i;
|
|
char string[128] = "", dial[128] = "";
|
|
int dash, first_digit, last_was_digit;
|
|
|
|
/* add digit */
|
|
SCCAT(p_m_s_dial, digit);
|
|
|
|
if (p_state == PORT_STATE_IN_SETUP)
|
|
new_state(PORT_STATE_IN_OVERLAP);
|
|
|
|
/* not last digit ? */
|
|
if (digit != 'c')
|
|
return;
|
|
|
|
/* parse string */
|
|
dash = 0; /* dash must be used next time */
|
|
first_digit = 1;
|
|
last_was_digit = 0;
|
|
p_dialinginfo.ntype = INFO_NTYPE_UNKNOWN;
|
|
for (i = 0; p_m_s_dial[i]; i++) {
|
|
if (dash || (last_was_digit && (p_m_s_dial[i]<'0' || p_m_s_dial[i]>'9')))
|
|
SCCAT(string, '-');
|
|
dash = 0;
|
|
last_was_digit = 0;
|
|
switch(p_m_s_dial[i]) {
|
|
case '1':
|
|
case '2':
|
|
case '3':
|
|
case '4':
|
|
case '5':
|
|
case '6':
|
|
case '7':
|
|
case '8':
|
|
case '9':
|
|
case '0':
|
|
if (first_digit)
|
|
dash = 1;
|
|
first_digit = 0;
|
|
last_was_digit = 1;
|
|
SCCAT(string, p_m_s_dial[i]);
|
|
SCCAT(dial, p_m_s_dial[i]);
|
|
break;
|
|
case '*':
|
|
SCAT(string, "C11");
|
|
SCCAT(dial, p_m_s_dial[i]);
|
|
dash = 1;
|
|
break;
|
|
case '#':
|
|
SCAT(string, "C12");
|
|
SCCAT(dial, p_m_s_dial[i]);
|
|
dash = 1;
|
|
break;
|
|
case 'a':
|
|
SCAT(string, "KP1");
|
|
SCCAT(dial, p_m_s_dial[i]);
|
|
dash = 1;
|
|
break;
|
|
case 'b':
|
|
SCAT(string, "KP2");
|
|
SCCAT(dial, p_m_s_dial[i]);
|
|
dash = 1;
|
|
break;
|
|
case 'c':
|
|
SCAT(string, "ST");
|
|
dash = 1;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
ss5_trace_header(p_m_mISDNport, this, SS5_DIALING_IND, p_m_b_channel);
|
|
add_trace("string", NULL, "%s", string);
|
|
add_trace("number", NULL, "%s", dial);
|
|
end_trace();
|
|
new_ss5_state(SS5_STATE_IDLE);
|
|
|
|
do_setup(dial, 1);
|
|
new_state(PORT_STATE_IN_PROCEEDING);
|
|
}
|
|
|
|
void Pss5::pulse_ind(int on)
|
|
{
|
|
struct lcr_msg *message;
|
|
char dial[3] = "a.";
|
|
|
|
if (p_m_s_signal == SS5_SIGNAL_PULSE_OFF) {
|
|
if (on) {
|
|
/* pulse turns on */
|
|
p_m_s_recog = 0;
|
|
new_ss5_signal(SS5_SIGNAL_PULSE_ON);
|
|
/* pulse turns of, count it */
|
|
p_m_s_pulsecount++;
|
|
PDEBUG(DEBUG_SS5, "%s: pulse turns on, counting\n", p_name);
|
|
} else {
|
|
/* pulse remains off */
|
|
p_m_s_recog += SS5_DECODER_NPOINTS;
|
|
/* not recognized end of digit, we wait... */
|
|
if (p_m_s_recog < BELL_TIMER_RECOG_END)
|
|
return;
|
|
PDEBUG(DEBUG_SS5, "%s: pulse remains off, counted %d pulses\n", p_name, p_m_s_pulsecount);
|
|
if (p_m_s_pulsecount >= 12)
|
|
dial[1] = '#';
|
|
else if (p_m_s_pulsecount == 11)
|
|
dial[1] = '*';
|
|
else if (p_m_s_pulsecount == 10)
|
|
dial[1] = '0';
|
|
else
|
|
dial[1] = p_m_s_pulsecount + '0';
|
|
ss5_trace_header(p_m_mISDNport, this, SS5_DIALING_IND, p_m_b_channel);
|
|
add_trace("digit", NULL, "%s", dial+1);
|
|
add_trace("pulses", NULL, "%d", p_m_s_pulsecount);
|
|
end_trace();
|
|
/* special star release feature */
|
|
if ((p_m_mISDNport->ss5 & SS5_FEATURE_STAR_RELEASE) && dial[1] == '*') {
|
|
ss5_trace_header(p_m_mISDNport, this, SS5_DIALING_IND, p_m_b_channel);
|
|
add_trace("star", NULL, "releases call");
|
|
end_trace();
|
|
goto star_release;
|
|
}
|
|
if (p_state == PORT_STATE_IN_SETUP) {
|
|
/* sending digit as setup */
|
|
do_setup(dial, 0); /* include 'a' == KP1 */
|
|
new_state(PORT_STATE_IN_OVERLAP);
|
|
} else {
|
|
/* sending digit as information */
|
|
message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_INFORMATION);
|
|
SCPY(message->param.information.id, dial+1);
|
|
message_put(message);
|
|
}
|
|
new_ss5_state(SS5_STATE_IDLE);
|
|
/* done rx pulses, return to idle */
|
|
new_ss5_state(SS5_STATE_IDLE);
|
|
}
|
|
} else {
|
|
if (on) {
|
|
/* pulse remains on */
|
|
p_m_s_recog += SS5_DECODER_NPOINTS;
|
|
} else {
|
|
/* pulse turns off */
|
|
if (p_m_s_recog >= BELL_TIMER_RECOG_HANGUP) {
|
|
PDEBUG(DEBUG_SS5, "%s: long pulse turns off, releasing\n", p_name);
|
|
ss5_trace_header(p_m_mISDNport, this, SS5_DIALING_IND, p_m_b_channel);
|
|
add_trace("longtone", NULL, "releases call");
|
|
end_trace();
|
|
star_release:
|
|
/* long pulse is gone, release current connection, if any */
|
|
while(p_epointlist) {
|
|
message = message_create(p_serial, p_epointlist->epoint_id, PORT_TO_EPOINT, MESSAGE_RELEASE);
|
|
message->param.disconnectinfo.location = LOCATION_BEYOND;
|
|
message->param.disconnectinfo.cause = CAUSE_NORMAL;
|
|
message_put(message);
|
|
free_epointlist(p_epointlist);
|
|
}
|
|
set_tone("", NULL);
|
|
/* return to setup state */
|
|
new_state(PORT_STATE_IN_SETUP);
|
|
new_ss5_state(SS5_STATE_IDLE);
|
|
return;
|
|
}
|
|
PDEBUG(DEBUG_SS5, "%s: short pulse turns off, releasing\n", p_name);
|
|
p_m_s_recog = 0;
|
|
new_ss5_signal(SS5_SIGNAL_PULSE_OFF);
|
|
}
|
|
}
|
|
}
|
|
|
|
void Pss5::proceed_to_send_ind(void)
|
|
{
|
|
ss5_trace_header(p_m_mISDNport, this, SS5_PROCEED_TO_SEND_IND, p_m_b_channel);
|
|
end_trace();
|
|
|
|
SCPY(p_m_s_dial, p_dialinginfo.id);
|
|
start_signal(SS5_STATE_DIAL_OUT);
|
|
|
|
new_state(PORT_STATE_OUT_OVERLAP);
|
|
}
|
|
|
|
void Pss5::busy_flash_ind(void)
|
|
{
|
|
struct lcr_msg *message;
|
|
|
|
ss5_trace_header(p_m_mISDNport, this, SS5_BUSY_FLASH_IND, p_m_b_channel);
|
|
end_trace();
|
|
|
|
/* busy before dialing ? */
|
|
if (!p_epointlist)
|
|
return;
|
|
|
|
if (!(p_m_mISDNport->ss5 & SS5_FEATURE_NODISCONNECT)) {
|
|
message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_DISCONNECT);
|
|
message->param.disconnectinfo.location = LOCATION_BEYOND;
|
|
message->param.disconnectinfo.cause = CAUSE_BUSY;
|
|
message_put(message);
|
|
}
|
|
|
|
new_state(PORT_STATE_IN_DISCONNECT);
|
|
}
|
|
|
|
void Pss5::answer_ind(void)
|
|
{
|
|
struct lcr_msg *message;
|
|
|
|
ss5_trace_header(p_m_mISDNport, this, SS5_ANSWER_IND, p_m_b_channel);
|
|
end_trace();
|
|
|
|
/* answer before dialing ? */
|
|
if (!p_epointlist)
|
|
return;
|
|
|
|
/* already connected */
|
|
if (!(p_m_mISDNport->ss5 & SS5_FEATURE_CONNECT)) {
|
|
message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_CONNECT);
|
|
message_put(message);
|
|
}
|
|
|
|
new_state(PORT_STATE_CONNECT);
|
|
}
|
|
|
|
void Pss5::forward_transfer_ind(void)
|
|
{
|
|
// struct lcr_msg *message;
|
|
|
|
ss5_trace_header(p_m_mISDNport, this, SS5_FORWARD_TRANSFER_IND, p_m_b_channel);
|
|
end_trace();
|
|
|
|
#if 0
|
|
/* if BELL flavor bluebox flag is set, use it to seize a new line */
|
|
if (!(p_m_mISDNport->ss5 & SS5_FEATURE_BELL))
|
|
return;
|
|
|
|
/* special BELL flavor hack to clear a line and seize a new one */
|
|
while(p_epointlist) {
|
|
message = message_create(p_serial, p_epointlist->epoint_id, PORT_TO_EPOINT, MESSAGE_RELEASE);
|
|
message->param.disconnectinfo.location = LOCATION_BEYOND;
|
|
message->param.disconnectinfo.cause = CAUSE_NORMAL;
|
|
message_put(message);
|
|
free_epointlist(p_epointlist);
|
|
}
|
|
set_tone("", NULL);
|
|
new_state(PORT_STATE_IN_SETUP);
|
|
#endif
|
|
}
|
|
|
|
void Pss5::clear_back_ind(void)
|
|
{
|
|
struct lcr_msg *message;
|
|
|
|
ss5_trace_header(p_m_mISDNport, this, SS5_CLEAR_BACK_IND, p_m_b_channel);
|
|
end_trace();
|
|
|
|
/* nobody? */
|
|
if (!p_epointlist)
|
|
return;
|
|
|
|
if (!(p_m_mISDNport->ss5 & SS5_FEATURE_NODISCONNECT)) {
|
|
message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_DISCONNECT);
|
|
message->param.disconnectinfo.location = LOCATION_BEYOND;
|
|
message->param.disconnectinfo.cause = CAUSE_NORMAL;
|
|
message_put(message);
|
|
}
|
|
|
|
new_state(PORT_STATE_IN_DISCONNECT);
|
|
}
|
|
|
|
void Pss5::clear_forward_ind(void)
|
|
{
|
|
struct lcr_msg *message;
|
|
|
|
ss5_trace_header(p_m_mISDNport, this, SS5_CLEAR_FORWARD_IND, p_m_b_channel);
|
|
end_trace();
|
|
|
|
new_state(PORT_STATE_IDLE);
|
|
set_tone("", NULL);
|
|
p_type = PORT_TYPE_SS5_IDLE;
|
|
|
|
/* someone ? */
|
|
if (!p_epointlist)
|
|
return;
|
|
|
|
message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_RELEASE);
|
|
message->param.disconnectinfo.location = LOCATION_BEYOND;
|
|
message->param.disconnectinfo.cause = CAUSE_NORMAL;
|
|
message_put(message);
|
|
free_epointlist(p_epointlist);
|
|
|
|
}
|
|
|
|
void Pss5::release_guard_ind(void)
|
|
{
|
|
struct lcr_msg *message;
|
|
|
|
ss5_trace_header(p_m_mISDNport, this, SS5_RELEASE_GUARD_IND, p_m_b_channel);
|
|
end_trace();
|
|
|
|
set_tone("", NULL);
|
|
|
|
/* someone ? */
|
|
if (!p_epointlist)
|
|
return;
|
|
|
|
message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_RELEASE);
|
|
message->param.disconnectinfo.location = LOCATION_BEYOND;
|
|
message->param.disconnectinfo.cause = CAUSE_NORMAL;
|
|
message_put(message);
|
|
free_epointlist(p_epointlist);
|
|
}
|
|
|
|
void Pss5::double_seizure_ind(void)
|
|
{
|
|
ss5_trace_header(p_m_mISDNport, this, SS5_DOUBLE_SEIZURE_IND, p_m_b_channel);
|
|
end_trace();
|
|
ss5_trace_header(p_m_mISDNport, this, SS5_DOUBLE_SEIZURE_REQ, p_m_b_channel);
|
|
end_trace();
|
|
|
|
/* start double seizure sequence, so remote exchange will recognize it */
|
|
start_signal(SS5_STATE_DOUBLE_SEIZE);
|
|
}
|
|
|
|
|
|
/*
|
|
* shuts down by sending a clear forward and releasing endpoint
|
|
*/
|
|
void Pss5::do_release(int cause, int location)
|
|
{
|
|
struct lcr_msg *message;
|
|
|
|
/* sending release to endpoint */
|
|
while(p_epointlist) {
|
|
message = message_create(p_serial, p_epointlist->epoint_id, PORT_TO_EPOINT, MESSAGE_RELEASE);
|
|
message->param.disconnectinfo.location = location;
|
|
message->param.disconnectinfo.cause = cause;
|
|
message_put(message);
|
|
free_epointlist(p_epointlist);
|
|
}
|
|
|
|
/* start clear-forward */
|
|
ss5_trace_header(p_m_mISDNport, this, SS5_CLEAR_FORWARD_REQ, p_m_b_channel);
|
|
end_trace();
|
|
start_signal(SS5_STATE_CLEAR_FORWARD);
|
|
|
|
new_state(PORT_STATE_RELEASE);
|
|
}
|
|
|
|
|
|
/*
|
|
* create endpoint and send setup
|
|
*/
|
|
void Pss5::do_setup(char *dial, int complete)
|
|
{
|
|
class Endpoint *epoint;
|
|
struct lcr_msg *message;
|
|
|
|
SCPY(p_dialinginfo.id, dial);
|
|
p_dialinginfo.sending_complete = complete;
|
|
p_callerinfo.present = INFO_PRESENT_NOTAVAIL;
|
|
p_callerinfo.screen = INFO_SCREEN_NETWORK;
|
|
p_callerinfo.ntype = INFO_NTYPE_NOTPRESENT;
|
|
p_callerinfo.isdn_port = p_m_portnum;
|
|
SCPY(p_callerinfo.interface, p_m_mISDNport->ifport->interface->name);
|
|
|
|
p_capainfo.bearer_capa = INFO_BC_AUDIO;
|
|
p_capainfo.bearer_info1 = (options.law=='a')?3:2;
|
|
p_capainfo.bearer_mode = INFO_BMODE_CIRCUIT;
|
|
p_capainfo.hlc = INFO_HLC_NONE;
|
|
p_capainfo.exthlc = INFO_HLC_NONE;
|
|
p_capainfo.source_mode = B_MODE_TRANSPARENT;
|
|
|
|
/* create endpoint */
|
|
if (p_epointlist)
|
|
FATAL("Incoming call but already got an endpoint.\n");
|
|
if (!(epoint = new Endpoint(p_serial, 0)))
|
|
FATAL("No memory for Endpoint instance\n");
|
|
epoint->ep_app = new_endpointapp(epoint, 0, p_m_mISDNport->ifport->interface->app); //incoming
|
|
epointlist_new(epoint->ep_serial);
|
|
|
|
/* send setup message to endpoit */
|
|
message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_SETUP);
|
|
message->param.setup.isdn_port = p_m_portnum;
|
|
message->param.setup.port_type = p_type;
|
|
// message->param.setup.dtmf = !p_m_mISDNport->ifport->nodtmf;
|
|
memcpy(&message->param.setup.dialinginfo, &p_dialinginfo, sizeof(struct dialing_info));
|
|
memcpy(&message->param.setup.callerinfo, &p_callerinfo, sizeof(struct caller_info));
|
|
memcpy(&message->param.setup.redirinfo, &p_redirinfo, sizeof(struct redir_info));
|
|
memcpy(&message->param.setup.capainfo, &p_capainfo, sizeof(struct capa_info));
|
|
message_put(message);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* handles all messages from endpoint
|
|
*/
|
|
|
|
/* MESSAGE_SETUP */
|
|
void Pss5::message_setup(unsigned int epoint_id, int message_id, union parameter *param)
|
|
{
|
|
struct lcr_msg *message;
|
|
int i;
|
|
char string[128] = "", dial[128] = "";
|
|
int dash, first_digit, last_was_digit;
|
|
|
|
if (p_epointlist) {
|
|
PERROR("endpoint already exist.\n");
|
|
message = message_create(p_serial, epoint_id, PORT_TO_EPOINT, MESSAGE_RELEASE);
|
|
message->param.disconnectinfo.location = LOCATION_PRIVATE_LOCAL;
|
|
message->param.disconnectinfo.cause = CAUSE_UNSPECIFIED;
|
|
message_put(message);
|
|
return;
|
|
}
|
|
|
|
/* copy setup infos to port */
|
|
memcpy(&p_callerinfo, ¶m->setup.callerinfo, sizeof(p_callerinfo));
|
|
memcpy(&p_dialinginfo, ¶m->setup.dialinginfo, sizeof(p_dialinginfo));
|
|
memcpy(&p_capainfo, ¶m->setup.capainfo, sizeof(p_capainfo));
|
|
memcpy(&p_redirinfo, ¶m->setup.redirinfo, sizeof(p_redirinfo));
|
|
/* screen outgoing caller id */
|
|
do_screen(1, p_callerinfo.id, sizeof(p_callerinfo.id), &p_callerinfo.ntype, &p_callerinfo.present, p_m_mISDNport->ifport->interface->name);
|
|
do_screen(1, p_callerinfo.id2, sizeof(p_callerinfo.id2), &p_callerinfo.ntype2, &p_callerinfo.present2, p_m_mISDNport->ifport->interface->name);
|
|
|
|
/* parse dial string */
|
|
dash = 0; /* dash must be used next time */
|
|
first_digit = 1;
|
|
last_was_digit = 0;
|
|
for (i = 0; p_dialinginfo.id[i]; i++) {
|
|
if (dash || (last_was_digit && (p_dialinginfo.id[i]<'0' || p_dialinginfo.id[i]>'9')))
|
|
SCCAT(string, '-');
|
|
dash = 0;
|
|
last_was_digit = 0;
|
|
switch(p_dialinginfo.id[i]) {
|
|
case '1':
|
|
case '2':
|
|
case '3':
|
|
case '4':
|
|
case '5':
|
|
case '6':
|
|
case '7':
|
|
case '8':
|
|
case '9':
|
|
case '0':
|
|
if (i && first_digit)
|
|
dash = 1;
|
|
first_digit = 0;
|
|
last_was_digit = 1;
|
|
SCCAT(string, p_dialinginfo.id[i]);
|
|
SCCAT(dial, p_dialinginfo.id[i]);
|
|
break;
|
|
case '*':
|
|
SCAT(string, "C11");
|
|
SCCAT(dial, '*');
|
|
dash = 1;
|
|
break;
|
|
case '#':
|
|
SCAT(string, "C12");
|
|
SCCAT(dial, '#');
|
|
dash = 1;
|
|
break;
|
|
case 'a':
|
|
SCAT(string, "KP1");
|
|
SCCAT(dial, 'a');
|
|
dash = 1;
|
|
break;
|
|
case 'b':
|
|
SCAT(string, "KP2");
|
|
SCCAT(dial, 'b');
|
|
dash = 1;
|
|
break;
|
|
case 'c':
|
|
SCAT(string, "ST");
|
|
SCCAT(dial, 'c');
|
|
dash = 1;
|
|
case 'K':
|
|
i++;
|
|
if (p_dialinginfo.id[i] != 'P')
|
|
goto dial_error;
|
|
i++;
|
|
if (p_dialinginfo.id[i] == '1') {
|
|
SCAT(string, "KP1");
|
|
SCCAT(dial, 'a');
|
|
dash = 1;
|
|
break;
|
|
}
|
|
if (p_dialinginfo.id[i] == '2') {
|
|
SCAT(string, "KP2");
|
|
SCCAT(dial, 'b');
|
|
dash = 1;
|
|
break;
|
|
}
|
|
goto dial_error;
|
|
case 'C':
|
|
i++;
|
|
if (p_dialinginfo.id[i] != '1')
|
|
goto dial_error;
|
|
i++;
|
|
if (p_dialinginfo.id[i] == '1') {
|
|
SCAT(string, "C11");
|
|
SCCAT(dial, 'a');
|
|
dash = 1;
|
|
break;
|
|
}
|
|
if (p_dialinginfo.id[i] == '2') {
|
|
SCAT(string, "C12");
|
|
SCCAT(dial, 'b');
|
|
dash = 1;
|
|
break;
|
|
}
|
|
goto dial_error;
|
|
case 'S':
|
|
i++;
|
|
if (p_dialinginfo.id[i] != 'T')
|
|
goto dial_error;
|
|
SCAT(string, "ST");
|
|
SCCAT(dial, 'c');
|
|
dash = 1;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
/* stop, if ST */
|
|
if (dial[0] && dial[strlen(dial)-1] == 'c')
|
|
break;
|
|
}
|
|
/* terminate */
|
|
if (dial[0] && dial[strlen(dial)-1]!='c') {
|
|
SCCAT(string, '-');
|
|
SCAT(string, "ST");
|
|
SCCAT(dial, 'c');
|
|
}
|
|
|
|
/* error in dial string */
|
|
if (!dial[0]) {
|
|
dial_error:
|
|
ss5_trace_header(p_m_mISDNport, this, SS5_DIALING_REQ, p_m_b_channel);
|
|
add_trace("string", NULL, "%s", p_dialinginfo.id);
|
|
if (!dial[0])
|
|
add_trace("error", NULL, "no number", dial);
|
|
else if (dial[0]!='a' && dial[0]!='b')
|
|
add_trace("error", NULL, "number must start with KP1/KP2", dial);
|
|
else
|
|
add_trace("error", NULL, "illegal format", dial);
|
|
end_trace();
|
|
message = message_create(p_serial, epoint_id, PORT_TO_EPOINT, MESSAGE_RELEASE);
|
|
message->param.disconnectinfo.location = LOCATION_PRIVATE_LOCAL;
|
|
message->param.disconnectinfo.cause = CAUSE_INVALID;
|
|
message_put(message);
|
|
return;
|
|
}
|
|
|
|
/* copy new dial string */
|
|
SCPY(p_dialinginfo.id, dial);
|
|
|
|
/* attach only if not already */
|
|
epointlist_new(epoint_id);
|
|
|
|
ss5_trace_header(p_m_mISDNport, this, SS5_DIALING_REQ, p_m_b_channel);
|
|
add_trace("string", NULL, "%s", string);
|
|
add_trace("type", NULL, "%s", (dial[0]=='b')?"international":"national");
|
|
add_trace("number", NULL, "%s", dial);
|
|
end_trace();
|
|
/* connect auto path */
|
|
if ((p_m_mISDNport->ss5 & SS5_FEATURE_CONNECT)) {
|
|
message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_CONNECT);
|
|
message_put(message);
|
|
} else {
|
|
message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_PROCEEDING);
|
|
message_put(message);
|
|
}
|
|
|
|
/* start seizing */
|
|
ss5_trace_header(p_m_mISDNport, this, SS5_SEIZING_REQ, p_m_b_channel);
|
|
end_trace();
|
|
new_ss5_state(SS5_STATE_SEIZING);
|
|
new_ss5_signal(SS5_SIGNAL_SEND_ON);
|
|
p_m_s_sample_nr = 0;
|
|
inband_send_on();
|
|
|
|
p_type = PORT_TYPE_SS5_OUT;
|
|
new_state(PORT_STATE_OUT_SETUP);
|
|
}
|
|
|
|
/* MESSAGE_CONNECT */
|
|
void Pss5::message_connect(unsigned int epoint_id, int message_id, union parameter *param)
|
|
{
|
|
memcpy(&p_connectinfo, ¶m->connectinfo, sizeof(p_connectinfo));
|
|
|
|
if (p_state != PORT_STATE_CONNECT) {
|
|
new_state(PORT_STATE_CONNECT);
|
|
p_m_s_answer = 1;
|
|
trigger_work(&p_m_s_queue);
|
|
}
|
|
|
|
set_tone("", NULL);
|
|
}
|
|
|
|
/* MESSAGE_DISCONNECT */
|
|
void Pss5::message_disconnect(unsigned int epoint_id, int message_id, union parameter *param)
|
|
{
|
|
/* disconnect and clear forward (release guard) */
|
|
// if ((p_type==PORT_TYPE_SS5_IN && !p_m_mISDNport->tones) /* incomming exchange with no tones */
|
|
if (0 || p_type==PORT_TYPE_SS5_OUT) { /* outgoing exchange */
|
|
do_release(param->disconnectinfo.cause, param->disconnectinfo.location);
|
|
return;
|
|
}
|
|
|
|
ss5_trace_header(p_m_mISDNport, this, SS5_CLEAR_BACK_REQ, p_m_b_channel);
|
|
end_trace();
|
|
start_signal(SS5_STATE_CLEAR_BACK);
|
|
|
|
new_state(PORT_STATE_OUT_DISCONNECT);
|
|
}
|
|
|
|
/* MESSAGE_RELEASE */
|
|
void Pss5::message_release(unsigned int epoint_id, int message_id, union parameter *param)
|
|
{
|
|
do_release(param->disconnectinfo.cause, param->disconnectinfo.location);
|
|
}
|
|
|
|
void Pss5::register_timeout(void)
|
|
{
|
|
do_release(CAUSE_UNSPECIFIED, LOCATION_PRIVATE_LOCAL);
|
|
}
|
|
|
|
/*
|
|
* endpoint sends messages to the port
|
|
*/
|
|
int Pss5::message_epoint(unsigned int epoint_id, int message_id, union parameter *param)
|
|
{
|
|
if (PmISDN::message_epoint(epoint_id, message_id, param))
|
|
return(1);
|
|
|
|
switch(message_id) {
|
|
case MESSAGE_SETUP: /* dial-out command received from epoint */
|
|
if (p_state!=PORT_STATE_IDLE) {
|
|
PERROR("Pss5(%s) ignoring setup because isdn port is not in idle state (or connected for sending display info).\n", p_name);
|
|
break;
|
|
}
|
|
if (p_epointlist && p_state==PORT_STATE_IDLE)
|
|
FATAL("Pss5(%s): epoint pointer is set in idle state, how bad!!\n", p_name);
|
|
message_setup(epoint_id, message_id, param);
|
|
break;
|
|
|
|
case MESSAGE_CONNECT: /* call of endpoint is connected */
|
|
message_connect(epoint_id, message_id, param);
|
|
break;
|
|
|
|
case MESSAGE_DISCONNECT: /* call has been disconnected */
|
|
message_disconnect(epoint_id, message_id, param);
|
|
break;
|
|
|
|
case MESSAGE_RELEASE: /* release isdn port */
|
|
message_release(epoint_id, message_id, param);
|
|
break;
|
|
|
|
default:
|
|
PDEBUG(DEBUG_SS5, "Pss5(%s) ss5 port with (caller id %s) received an unhandled message: %d\n", p_name, p_callerinfo.id, message_id);
|
|
}
|
|
|
|
return(1);
|
|
}
|
|
|