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osmocom-analog
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anetz: Add release timer, so station keeps blocked for a while 

This prevents other mobile phone or outgoing call to seize the
base station before the current phone releases the transmitter.
pull/1/head
Andreas Eversberg 2016-03-11 18:08:57 +01:00
parent 0dc81fe210
commit e9234e3926
2 changed files with 24 additions and 7 deletions
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30
src/anetz/anetz.c
View File

@ -37,6 +37,7 @@ static int new_callref = 0x40000000;
/* Timers */
#define PAGING_TO 30 /* Nach dieser Zeit ist der Operator genervt... */
#define RELEASE_TO 3 /* Release time, so station keeps blocked for a while */
/* Convert channel number to frequency number of base station.
Set 'unterband' to 1 to get frequency of mobile station. */
@ -205,6 +206,18 @@ static void anetz_go_idle(anetz_t *anetz)
anetz->station_id[0] = '\0';
}
/* Release connection towards mobile station by sending idle tone for a while. */
static void anetz_release(anetz_t *anetz)
{
timer_stop(&anetz->timer);
PDEBUG(DANETZ, DEBUG_INFO, "Sending 2280 Hz release tone.\n");
anetz->state = ANETZ_AUSLOESEN;
anetz->dsp_mode = DSP_MODE_TONE;
anetz->station_id[0] = '\0';
timer_start(&anetz->timer, RELEASE_TO);
}
/* Enter paging state and transmit 4 paging tones. */
static void anetz_page(anetz_t *anetz, const char *dial_string, double *freq)
{
@ -221,7 +234,7 @@ void anetz_loss_indication(anetz_t *anetz)
{
if (anetz->state == ANETZ_GESPRAECH) {
PDEBUG(DANETZ, DEBUG_NOTICE, "Detected loss of signal, releasing.\n");
anetz_go_idle(anetz);
anetz_release(anetz);
call_in_release(anetz->sender.callref, CAUSE_TEMPFAIL);
anetz->sender.callref = 0;
}
@ -259,8 +272,8 @@ void anetz_receive_tone(anetz_t *anetz, int tone)
PDEBUG(DANETZ, DEBUG_INFO, "1750 Hz signal from mobile station is gone, setup call.\n");
rc = call_in_setup(callref, anetz->station_id, "0");
if (rc < 0) {
PDEBUG(DANETZ, DEBUG_NOTICE, "Call rejected (cause %d), releasing.\n", -rc);
anetz_go_idle(anetz);
PDEBUG(DANETZ, DEBUG_NOTICE, "Call rejected (cause %d), sending release tone.\n", -rc);
anetz_release(anetz);
break;
}
anetz->sender.callref = callref;
@ -272,8 +285,8 @@ void anetz_receive_tone(anetz_t *anetz, int tone)
}
/* release call */
if (tone == 1) {
PDEBUG(DANETZ, DEBUG_INFO, "Received 1750 Hz release signal from mobile station, sending idle signal.\n");
anetz_go_idle(anetz);
PDEBUG(DANETZ, DEBUG_INFO, "Received 1750 Hz release signal from mobile station, sending release tone.\n");
anetz_release(anetz);
call_in_release(anetz->sender.callref, CAUSE_NORMAL);
anetz->sender.callref = 0;
break;
@ -305,6 +318,9 @@ static void anetz_timeout(struct timer *timer)
call_in_release(anetz->sender.callref, CAUSE_NOANSWER);
anetz->sender.callref = 0;
break;
case ANETZ_AUSLOESEN:
anetz_go_idle(anetz);
break;
default:
break;
}
@ -425,8 +441,8 @@ void call_out_release(int callref, int cause)
switch (anetz->state) {
case ANETZ_GESPRAECH:
PDEBUG(DANETZ, DEBUG_NOTICE, "Outgoing release, during call, going idle!\n");
anetz_go_idle(anetz);
PDEBUG(DANETZ, DEBUG_NOTICE, "Outgoing release, during call, sending release tone!\n");
anetz_release(anetz);
break;
case ANETZ_ANRUF:
PDEBUG(DANETZ, DEBUG_NOTICE, "Outgoing release, during alerting, going idle!\n");

1
src/anetz/anetz.h
View File

@ -11,6 +11,7 @@ enum anetz_state {
ANETZ_FREI, /* sending 2280 Hz tone */
ANETZ_GESPRAECH, /* during conversation */
ANETZ_ANRUF, /* phone is paged */
ANETZ_AUSLOESEN, /* releasing towards phone */
};
typedef struct anetz {