2007-08-17 21:31:22 +00:00
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/* packet-dpnss_dass2.c
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* Routines for DPNNS/DASS2 dissection
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* Copyright 2007, Anders Broman <anders.broman[at]ericsson.com>
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*
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* $Id$
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* References:
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* ND1301:2001/03 http://www.nicc.org.uk/nicc-public/Public/interconnectstandards/dpnss/nd1301_2004_11.pdf
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <glib.h>
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#include <epan/packet.h>
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#include <epan/proto.h>
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/* Initialize the protocol and registered fields */
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2007-08-19 20:26:08 +00:00
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static int proto_dpnss = -1;
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static int hf_dpnss_msg_grp_id = -1;
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static int hf_dpnss_cc_msg_type = -1;
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static int hf_dpnss_e2e_msg_type = -1;
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static int hf_dpnss_LbL_msg_type = -1;
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static int hf_dpnss_ext_bit = -1;
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static int hf_dpnss_ext_bit_notall = -1;
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static int hf_dpnss_sic_type = -1;
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static int hf_dpnss_sic_details_for_speech = -1;
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static int hf_dpnss_sic_details_for_data1 = -1;
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static int hf_dpnss_sic_details_for_data2 = -1;
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static int hf_dpnss_dest_addr = -1;
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static int hf_dpnss_sic_oct2_data_type = -1;
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static int hf_dpnss_sic_oct2_duplex = -1;
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static int hf_dpnss_sic_oct2_sync_data_format = -1;
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static int hf_dpnss_sic_oct2_sync_byte_timing = -1;
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static int hf_dpnss_sic_oct2_net_ind_clk = -1;
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static int hf_dpnss_sic_oct2_async_data = -1;
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static int hf_dpnss_sic_oct2_async_flow_ctrl = -1;
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static int hf_dpnss_clearing_cause = -1;
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static int hf_dpnss_rejection_cause = -1;
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2007-08-17 21:31:22 +00:00
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#define DPNNS_MESSAGE_GROUP_CC 0
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#define DPNNS_MESSAGE_GROUP_E2E 2
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#define DPNNS_MESSAGE_GROUP_LbL 4
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2007-08-19 20:26:08 +00:00
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#define DPNSS_CC_MSG_ISRM_C 0
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#define DPNSS_CC_MSG_ISRM_I 1
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#define DPNSS_CC_MSG_RM_C 2
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#define DPNSS_CC_MSG_RM_I 3
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#define DPNSS_CC_MSG_CCM 5
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#define DPNSS_CC_MSG_NIM 6
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#define DPNSS_CC_MSG_CRM 8
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#define DPNSS_CC_MSG_NAM 9
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#define DPNSS_CC_MSG_RRM 10
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#define DPNSS_CC_MSG_SSRM_I 11
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#define DPNSS_CC_MSG_SSRM_C 12
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2007-08-17 21:31:22 +00:00
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/* Initialize the subtree pointers */
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2007-08-19 20:26:08 +00:00
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static int ett_dpnss = -1;
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static int ett_dpnss_sel_field = -1;
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static int ett_dpnss_sic_field = -1;
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static int ett_dpnss_ind_field = -1;
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2007-08-17 21:31:22 +00:00
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static const value_string dpnss_msg_grp_id_vals[] = {
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{0, "Call Control Message Group"},
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{2, "End-to-End Message Group"},
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{4, "Link-by-Link Message Group"},
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{0, NULL }
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};
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static const value_string dpnss_cc_msg_type_vals[] = {
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2007-08-19 20:26:08 +00:00
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{DPNSS_CC_MSG_ISRM_C, "INITIAL SERVICE REQUEST Message (COMPLETE) - ISRM (C)"},
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{DPNSS_CC_MSG_ISRM_I, "INITIAL SERVICE REQUEST Message (INCOMPLETE) - ISRM(I)"},
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{DPNSS_CC_MSG_RM_C, "RECALL Message (COMPLETE) - RM(C)"},
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{DPNSS_CC_MSG_RM_I, "RECALL Message (INCOMPLETE) - RM(I)"},
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{DPNSS_CC_MSG_CCM, "CALL CONNECTED Message - CCM"},
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{DPNSS_CC_MSG_NIM, "NETWORK INDICATION Message - NIM"},
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{DPNSS_CC_MSG_CRM, "CLEAR REQUEST Message - CRM/CLEAR INDICATION Message - CIM"}, /* Humm chek 2.1.7/2.1.8 - depends on dir? */
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{DPNSS_CC_MSG_NAM, "NUMBER ACKNOWLEDGE Message - NAM"},
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{DPNSS_CC_MSG_RRM, "RECALL REJECTION Message - RRM"},
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{DPNSS_CC_MSG_SSRM_I, "SUBSEQUENT SERVICE REQUEST Message (INCOMPLETE) - SSRM(I)"},
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{DPNSS_CC_MSG_SSRM_C, "SUBSEQUENT SERVICE REQUEST Message (COMPLETE) - SSRM(C)"},
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2007-08-17 21:31:22 +00:00
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{ 0, NULL }
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};
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static const value_string dpnss_cc_msg_short_type_vals[] = {
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2007-08-19 20:26:08 +00:00
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{DPNSS_CC_MSG_ISRM_C, "ISRM (C)"},
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{DPNSS_CC_MSG_ISRM_I, "ISRM(I)"},
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{DPNSS_CC_MSG_RM_C, "RM(C)"},
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{DPNSS_CC_MSG_RM_I, "RM(I)"},
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{DPNSS_CC_MSG_CCM, "CCM"},
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{DPNSS_CC_MSG_NIM, "NIM"},
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{DPNSS_CC_MSG_CRM, "CRM/CIM"}, /* Humm chek 2.1.7/2.1.8 - depends on dir? */
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{DPNSS_CC_MSG_NAM, "NAM"},
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{DPNSS_CC_MSG_RRM, "RRM"},
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{DPNSS_CC_MSG_SSRM_I, "SSRM(I)"},
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{DPNSS_CC_MSG_SSRM_C, "SSRM(C)"},
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2007-08-17 21:31:22 +00:00
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{0, NULL }
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};
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/* 2.2 END-TO-END MESSAGE GROUP */
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static const value_string dpnss_e2e_msg_type_vals[] = {
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{2, "END-to-END Message (COMPLETE) - EEM(C)"},
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{3, "END-to-END Message (INCOMPLETE) - EEM(I)"},
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{4, "SINGLE-CHANNEL CLEAR REQUEST Message - SCRM"},
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{5, "SINGLE-CHANNEL CLEAR INDICATION Message - SCIM"},
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{6, "END-to-END RECALL Message (COMPLETE) - ERM(C)"},
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{7, "END-to-END RECALL Message (INCOMPLETE) - ERM(I)"},
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{8, "NON SPECIFIED INFORMATION Message - NSIM"},
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{ 0, NULL }
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};
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static const value_string dpnss_e2e_msg_short_type_vals[] = {
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{2, "EEM(C)"},
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{3, "EEM(I)"},
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{4, "SCRM"},
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{5, "SCIM"},
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{6, "ERM(C)"},
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{7, "ERM(I)"},
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{8, "NSIM"},
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{ 0, NULL }
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};
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/* 2.3 LINK-BY-LINK MESSAGE GROUP */
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static const value_string dpnss_LbL_msg_type_vals[] = {
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{0, "LINK-by-LINK Message (COMPLETE) - LLM(C)"},
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{1, "LINK-by-LINK Message (INCOMPLETE) - LLM(I)"},
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{2, "LINK-by-LINK REJECT Message - LLRM"},
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{4, "SWAP Message - SM"},
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{5, "LINK MAINTENANCE Message - LMM"},
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{6, "LINK MAINTENANCE REJECT Message - LMRM"},
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{ 0, NULL }
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};
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static const value_string dpnss_LbL_msg_short_type_vals[] = {
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{0, "LLM(C)"},
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{1, "LLM(I)"},
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{2, "LLRM"},
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{4, "SM"},
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{5, "LMM"},
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{6, "LMRM"},
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{ 0, NULL }
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};
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static const true_false_string dpnss_ext_bit_vals = {
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"further octet(s) follow",
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"no further octets"
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};
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2007-08-19 20:26:08 +00:00
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static const true_false_string dpnss_ext_bit_no_ext_vals = {
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"no further octets",
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"Invalid"
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};
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2007-08-17 21:31:22 +00:00
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/* SECTION 4 ANNEX 1 */
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static const value_string dpnss_sic_type_type_vals[] = {
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{0, "invalid"},
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{1, "speech"},
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{2, "data"},
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{3, "data"},
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{4, "interworking with DASS 2 - treat as data"},
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{5, "interworking with DASS 2 - treat as data"},
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{6, "interworking with DASS 2 - treat as data"},
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{7, "interworking with DASS 2 - treat as data"},
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{ 0, NULL }
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};
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2007-08-19 20:26:08 +00:00
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static const value_string dpnss_sic_details_for_speech_vals[] = {
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2007-08-17 21:31:22 +00:00
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{0, "64 kbit/s PCM G.711 A-Law or analogue"},
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{1, "32 kbit/s ADPCM G.721"},
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{2, "64 kbit/s PCM G.711 u-Law or analogue"},
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{3, "Invalid"},
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{4, "Invalid"},
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{5, "Invalid"},
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{6, "Invalid"},
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{7, "Invalid"},
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{8, "Invalid"},
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{9, "Invalid"},
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{10, "Invalid"},
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{11, "Invalid"},
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{12, "Invalid"},
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{13, "Invalid"},
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{14, "Invalid"},
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{15, "Invalid"},
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{ 0, NULL }
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};
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2007-08-19 20:26:08 +00:00
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static const value_string dpnss_sic_details_for_data_rates1_vals[] = {
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2007-08-17 21:31:22 +00:00
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{0, "64000 bit/s"},
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{1, "56000 bit/s"},
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{2, "48000 bit/s"},
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{3, "32000 bit/s"},
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{4, "19200 bit/s"},
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{5, "16000 bit/s"},
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{6, "14400 bit/s"},
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{7, "12000 bit/s"},
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{8, "9600 bit/s"},
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{9, "8000 bit/s"},
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{10, "7200 bit/s"},
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{11, "4800 bit/s"},
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{12, "3600 bit/s"},
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{13, "2400 bit/s"},
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{14, "1200 bit/s"},
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{15, "600 bit/s"},
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{ 0, NULL }
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};
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2007-08-19 20:26:08 +00:00
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static const value_string dpnss_sic_details_for_data_rates2_vals[] = {
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2007-08-17 21:31:22 +00:00
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{0, "300 bit/s"},
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{1, "200 bit/s"},
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{2, "150 bit/s"},
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{3, "134.5 bit/s"},
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{4, "110 bit/s"},
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{5, "100 bit/s"},
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{6, "75 bit/s"},
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{7, "50 bit/s"},
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{8, "75/1200 bit/s"},
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{9, "1200/75 bit/s"},
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{10, "invalid"},
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{11, "invalid"},
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{12, "invalid"},
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{13, "invalid"},
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{14, "invalid"},
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{15, "invalid"},
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{ 0, NULL }
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};
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2007-08-19 20:26:08 +00:00
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/* Octet 2 */
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static const value_string dpnss_sic_oct2_data_type_vals[] = {
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{0, "Invalid"},
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{1, "Invalid"},
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{2, "Invalid"},
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{3, "Synchronous"},
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{4, "Synchronous"},
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{5, "Asynchronous"},
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{6, "Asynchronous"},
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{7, "Asynchronous"},
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{ 0, NULL }
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};
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static const true_false_string dpnss_duplex_vals = {
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"Half Duplex (HDX)",
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"Full Duplex (FDX)"
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};
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static const true_false_string dpnss_sic_oct2_sync_data_format_vals = {
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"X.25 Packet Mode",
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"Anonymous or Unformatted"
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};
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static const true_false_string dpnss_sic_oct2_net_ind_clk_vals = {
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"Bits E4/E5/E6 indicate phase",
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"Clock Locked to Transmission"
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};
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static const true_false_string dpnss_provided_vals = {
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"Provided",
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"Not Provided"
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};
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static const value_string dpnss_sic_oct2_async_data_type_vals[] = {
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{0, "Unspecified"},
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{1, "5 data bits"},
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{2, "7 data bits"},
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{3, "8 data bits"},
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{ 0, NULL }
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};
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static const true_false_string dpnss_flow_control_vals = {
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"TA has ESRA capability",
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"TA does not have ESRA capability"
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};
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/* SECTION 4 Global Issue 7
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* ANNEX 3 CLEARING/REJECTION CAUSE CODES
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*/
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static const value_string dpnss_clearing_cause_code_vals[] = {
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{0x29, "Access Barred"},
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{0x14, "Acknowledgement"},
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{0x01, "Address Incomplete"},
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{0x08, "Busy"},
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{0x23, "Channel Out of Service"},
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{0x2d, "DTE Controlled Not Ready"},
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{0x07, "Congestion"},
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{0x30, "Call Termination"},
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{0x18, "Facility Not Registered"},
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{0x0a, "Incoming Calls Barred"},
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{0x13, "Service Incompatible"},
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{0x1a, "Message Not Understood"},
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{0x1e, "Network Address Extension-Error"},
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{0x02, "Network Termination"},
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{0x00, "Number Unobtainable"},
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{0x24, "Priority Forced Release"},
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{0x19, "Reject"},
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{0x1c, "Route Out of Service"},
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{0x04, "Subscriber Incompatible"},
|
|
|
|
{0x15, "Signal Not Understood"},
|
|
|
|
{0x16, "Signal Not Valid"},
|
|
|
|
{0x09, "Subscriber Out of Service"},
|
|
|
|
{0x1b, "Signalling System Incompatible"},
|
|
|
|
{0x17, "Service Temporarily Unavailable"},
|
|
|
|
{0x03, "Service Unavailable"},
|
|
|
|
{0x1d, "Transferred"},
|
|
|
|
{0x2e, "DTE Uncontrolled Not Ready"},
|
|
|
|
{ 0, NULL }
|
|
|
|
};
|
|
|
|
static int
|
|
|
|
dissect_dpnss_sic(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, int offset)
|
|
|
|
{
|
|
|
|
guint8 octet, type_of_data;
|
|
|
|
|
|
|
|
octet = tvb_get_guint8(tvb,offset);
|
|
|
|
type_of_data = (octet & 0x70)>>4;
|
|
|
|
proto_tree_add_item(tree, hf_dpnss_ext_bit, tvb, offset, 1, FALSE);
|
|
|
|
proto_tree_add_item(tree, hf_dpnss_sic_type, tvb, offset, 1, FALSE);
|
|
|
|
switch(type_of_data){
|
|
|
|
case 1:
|
|
|
|
/* Type of Data (001) : Details for Speech */
|
|
|
|
proto_tree_add_item(tree, hf_dpnss_sic_details_for_speech, tvb, offset, 1, FALSE);
|
|
|
|
break;
|
|
|
|
case 2:
|
|
|
|
/* Type of Data (010) : Data Rates */
|
|
|
|
proto_tree_add_item(tree, hf_dpnss_sic_details_for_data1, tvb, offset, 1, FALSE);
|
|
|
|
break;
|
|
|
|
case 3:
|
|
|
|
/* Type of Data (011) : Data Rates */
|
|
|
|
proto_tree_add_item(tree, hf_dpnss_sic_details_for_data2, tvb, offset, 1, FALSE);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
/* Illegal */
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
offset++;
|
|
|
|
if((octet&0x80)==0x80){
|
|
|
|
/* Extension bit set
|
|
|
|
* Synch/Asynchronous Information
|
|
|
|
*/
|
|
|
|
octet = tvb_get_guint8(tvb,offset);
|
|
|
|
type_of_data = octet&0x3;
|
|
|
|
proto_tree_add_item(tree, hf_dpnss_ext_bit_notall, tvb, offset, 1, FALSE);
|
|
|
|
switch(type_of_data){
|
|
|
|
case 3:
|
|
|
|
/* Synchronous */
|
|
|
|
case 4:
|
|
|
|
/* Synchronous */
|
|
|
|
proto_tree_add_item(tree, hf_dpnss_sic_oct2_net_ind_clk, tvb, offset, 1, FALSE);
|
|
|
|
proto_tree_add_item(tree, hf_dpnss_sic_oct2_sync_data_format, tvb, offset, 1, FALSE);
|
|
|
|
proto_tree_add_item(tree, hf_dpnss_sic_oct2_sync_byte_timing, tvb, offset, 1, FALSE);
|
|
|
|
break;
|
|
|
|
case 5:
|
|
|
|
/* Asynchronous */
|
|
|
|
case 6:
|
|
|
|
/* Asynchronous */
|
|
|
|
case 7:
|
|
|
|
/* Asynchronous */
|
|
|
|
proto_tree_add_item(tree, hf_dpnss_sic_oct2_async_flow_ctrl, tvb, offset, 1, FALSE);
|
|
|
|
proto_tree_add_item(tree, hf_dpnss_sic_oct2_async_data, tvb, offset, 1, FALSE);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
proto_tree_add_item(tree, hf_dpnss_sic_oct2_duplex, tvb, offset, 1, FALSE);
|
|
|
|
proto_tree_add_item(tree, hf_dpnss_sic_oct2_data_type, tvb, offset, 1, FALSE);
|
|
|
|
offset++;
|
|
|
|
}
|
|
|
|
return offset;
|
|
|
|
}
|
2007-08-17 21:31:22 +00:00
|
|
|
|
2007-08-19 20:26:08 +00:00
|
|
|
/* 3.1 Supplementary Information Strings
|
|
|
|
* A Supplementary Information String comprises a Supplementary
|
|
|
|
* Information Identifier which may be followed by one or more
|
|
|
|
* Parameters. A Supplementary Information String starts with the
|
|
|
|
* IA5 character * and ends with the IA5 character #.
|
|
|
|
*
|
|
|
|
* When the Supplementary Information String includes Parameters
|
|
|
|
* these are separated from the identifier and each other by a *.
|
|
|
|
* eg * Supplementary Information Identifier code #
|
|
|
|
* or * Supplementary Information Identifier code * Parameter #
|
|
|
|
* or * Supplementary Information Identifier code * Parameter * Parameter #
|
|
|
|
* A Supplementary Information String shall be wholly contained
|
|
|
|
* within one Selection or Indication Field (ie it shall not be
|
|
|
|
* split between messages).
|
2007-08-17 21:31:22 +00:00
|
|
|
*
|
2007-08-19 20:26:08 +00:00
|
|
|
* 3.2 Supplementary Information String Identifier
|
|
|
|
* The identifier comprises one or more IA5 numerals 0-9 which may
|
|
|
|
* be followed by a single IA5 alpha-character suffix in the range A-Z.
|
|
|
|
* The numerals of the identifier indicate the main function of the
|
|
|
|
* Supplementary Information String, eg "39F" indicates "Diverting
|
|
|
|
* on No Reply". "F" is the suffix.
|
|
|
|
*
|
|
|
|
* 3.5 Destination Address
|
|
|
|
* The Destination Address comprises one or more IA5 numerals 0 to
|
|
|
|
* 9, has no identifier code and is not prefixed by a * or
|
|
|
|
* terminated by a #. The digits are always the last characters in
|
|
|
|
* the Selection Block. The first Destination Address digit
|
|
|
|
* immediately follows the # of the last Supplementary Information
|
|
|
|
* String.
|
2007-08-17 21:31:22 +00:00
|
|
|
*/
|
|
|
|
static int
|
2007-08-19 20:26:08 +00:00
|
|
|
dissect_dpnss_sup_info_str(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, gint offset)
|
2007-08-17 21:31:22 +00:00
|
|
|
{
|
2007-08-19 20:26:08 +00:00
|
|
|
gint start_offset, hash_offset, tvb_end_offset;
|
|
|
|
guint8 octet;
|
|
|
|
gboolean last_string = FALSE;
|
2007-08-17 21:31:22 +00:00
|
|
|
|
2007-08-19 20:26:08 +00:00
|
|
|
tvb_end_offset = tvb_length(tvb);
|
2007-08-17 21:31:22 +00:00
|
|
|
|
2007-08-19 20:26:08 +00:00
|
|
|
while((offset<tvb_end_offset)&&(last_string == FALSE)){
|
|
|
|
octet = tvb_get_guint8(tvb,offset);
|
|
|
|
if (octet == '*'){
|
|
|
|
/* Supplementary Information String */
|
|
|
|
start_offset = offset;
|
|
|
|
hash_offset = tvb_find_guint8(tvb, offset, -1, '#');
|
|
|
|
proto_tree_add_text(tree, tvb, offset, hash_offset-offset, "Supplementary Information: %s",tvb_format_text(tvb,offset,hash_offset-offset));
|
|
|
|
|
|
|
|
offset = hash_offset+1;
|
|
|
|
}else{
|
|
|
|
last_string = TRUE;
|
|
|
|
proto_tree_add_item(tree, hf_dpnss_dest_addr, tvb, offset, -1, FALSE);
|
|
|
|
}
|
|
|
|
}
|
2007-08-17 21:31:22 +00:00
|
|
|
return offset;
|
|
|
|
}
|
|
|
|
|
2007-08-19 20:26:08 +00:00
|
|
|
|
|
|
|
static void
|
2007-08-17 21:31:22 +00:00
|
|
|
dissect_dpnss_LbL_msg(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
|
|
{
|
|
|
|
int offset = 0;
|
|
|
|
guint8 octet;
|
|
|
|
|
|
|
|
proto_tree_add_item(tree, hf_dpnss_LbL_msg_type, tvb, offset, 1, FALSE);
|
|
|
|
octet = tvb_get_guint8(tvb,offset)&0x0f;
|
|
|
|
offset++;
|
|
|
|
if(check_col(pinfo->cinfo, COL_INFO))
|
2007-08-19 20:26:08 +00:00
|
|
|
col_add_fstr(pinfo->cinfo, COL_INFO, "%s ",
|
2007-08-17 21:31:22 +00:00
|
|
|
val_to_str(octet, dpnss_LbL_msg_short_type_vals, "Unknown (%d)" ));
|
|
|
|
switch (octet){
|
|
|
|
default:
|
|
|
|
proto_tree_add_text(tree, tvb, offset, 1, "Dissection of this message not supported yet");
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2007-08-19 20:26:08 +00:00
|
|
|
static void
|
2007-08-17 21:31:22 +00:00
|
|
|
dissect_dpnss_e2e_msg(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
|
|
{
|
|
|
|
int offset = 0;
|
|
|
|
guint8 octet;
|
|
|
|
|
|
|
|
proto_tree_add_item(tree, hf_dpnss_e2e_msg_type, tvb, offset, 1, FALSE);
|
|
|
|
octet = tvb_get_guint8(tvb,offset)&0x0f;
|
|
|
|
offset++;
|
|
|
|
if(check_col(pinfo->cinfo, COL_INFO))
|
2007-08-19 20:26:08 +00:00
|
|
|
col_add_fstr(pinfo->cinfo, COL_INFO, "%s ",
|
2007-08-17 21:31:22 +00:00
|
|
|
val_to_str(octet, dpnss_e2e_msg_short_type_vals, "Unknown (%d)" ));
|
|
|
|
switch (octet){
|
|
|
|
default:
|
|
|
|
proto_tree_add_text(tree, tvb, offset, 1, "Dissection of this message not supported yet");
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2007-08-19 20:26:08 +00:00
|
|
|
static void
|
2007-08-17 21:31:22 +00:00
|
|
|
dissect_dpnss_cc_msg(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
|
|
{
|
2007-08-19 20:26:08 +00:00
|
|
|
proto_item *sel_field_item, *sic_field_item, *ind_field_item;
|
|
|
|
proto_tree *sel_field_tree, *sic_field_tree, *ind_field_tree;
|
2007-08-17 21:31:22 +00:00
|
|
|
int offset = 0;
|
2007-08-19 20:26:08 +00:00
|
|
|
int tvb_end_offset;
|
2007-08-17 21:31:22 +00:00
|
|
|
guint8 octet;
|
|
|
|
|
2007-08-19 20:26:08 +00:00
|
|
|
tvb_end_offset = tvb_length(tvb);
|
2007-08-17 21:31:22 +00:00
|
|
|
proto_tree_add_item(tree, hf_dpnss_cc_msg_type, tvb, offset, 1, FALSE);
|
|
|
|
octet = tvb_get_guint8(tvb,offset)&0x0f;
|
|
|
|
offset++;
|
|
|
|
if(check_col(pinfo->cinfo, COL_INFO))
|
|
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, "%s ",
|
|
|
|
val_to_str(octet, dpnss_cc_msg_short_type_vals, "Unknown (%d)" ));
|
|
|
|
|
2007-08-19 20:26:08 +00:00
|
|
|
if(tree){
|
|
|
|
switch (octet){
|
|
|
|
case DPNSS_CC_MSG_ISRM_C:
|
|
|
|
/* 2.1.1 INITIAL SERVICE REQUEST Message (COMPLETE) - ISRM (C) */
|
|
|
|
/* fall trough */
|
|
|
|
case DPNSS_CC_MSG_ISRM_I:
|
|
|
|
/* 2.1.2 INITIAL SERVICE REQUEST Message (INCOMPLETE) - ISRM(I) */
|
|
|
|
case DPNSS_CC_MSG_RM_C:
|
|
|
|
/* 2.1.3 RECALL Message (COMPLETE) - RM(C) */
|
|
|
|
/* fall trough */
|
|
|
|
case DPNSS_CC_MSG_RM_I:
|
|
|
|
/* 2.1.4 RECALL Message (INCOMPLETE) - RM(I)*/
|
|
|
|
/* fall trough */
|
|
|
|
|
|
|
|
|
|
|
|
/* Service Indicator Code
|
|
|
|
* Note: On data calls the SIC may comprise more than one octet.
|
|
|
|
* The Service Indicator Code is coded in accordance with ANNEX 1.
|
|
|
|
*/
|
2007-08-19 20:41:16 +00:00
|
|
|
sic_field_item = proto_tree_add_text(tree, tvb, offset, -1, "Service Indicator Code");
|
2007-08-19 20:26:08 +00:00
|
|
|
sic_field_tree = proto_item_add_subtree(sic_field_item, ett_dpnss_sic_field);
|
|
|
|
offset =dissect_dpnss_sic(tvb, pinfo, sic_field_tree, offset);
|
|
|
|
/*
|
|
|
|
* Selection Field
|
|
|
|
* The Selection Field contains the selection information relating
|
|
|
|
* to a call set-up or Supplementary Service Request, and is
|
|
|
|
* structured as shown in Subsection 3.
|
|
|
|
*/
|
|
|
|
sel_field_item = proto_tree_add_text(tree, tvb, offset, -1, "Selection Field: %s",tvb_format_text(tvb,offset,tvb_length_remaining(tvb, offset)));
|
|
|
|
sel_field_tree = proto_item_add_subtree(sel_field_item, ett_dpnss_sel_field);
|
|
|
|
offset = dissect_dpnss_sup_info_str(tvb, pinfo, sel_field_tree, offset);
|
2007-08-17 21:31:22 +00:00
|
|
|
break;
|
2007-08-19 20:26:08 +00:00
|
|
|
case DPNSS_CC_MSG_CCM:
|
|
|
|
/* 2.1.5 CALL CONNECTED Message - CCM */
|
|
|
|
if(tvb_end_offset>offset){
|
|
|
|
/* Indication Field (Optional) */
|
|
|
|
ind_field_item = proto_tree_add_text(tree, tvb, offset, -1, "Indication Field: %s",tvb_format_text(tvb,offset,tvb_length_remaining(tvb, offset)));
|
|
|
|
ind_field_tree = proto_item_add_subtree(ind_field_item, ett_dpnss_ind_field);
|
|
|
|
offset = dissect_dpnss_sup_info_str(tvb, pinfo, ind_field_tree, offset);
|
|
|
|
}
|
2007-08-17 21:31:22 +00:00
|
|
|
break;
|
2007-08-19 20:26:08 +00:00
|
|
|
case DPNSS_CC_MSG_NIM:
|
|
|
|
/* 2.1.6 NETWORK INDICATION Message - NIM */
|
2007-08-19 20:41:16 +00:00
|
|
|
/* fall trough */
|
2007-08-19 20:26:08 +00:00
|
|
|
case DPNSS_CC_MSG_NAM:
|
|
|
|
/* 2.1.9 NUMBER ACKNOWLEDGE Message - NAM */
|
|
|
|
/* Indication Field */
|
|
|
|
ind_field_item = proto_tree_add_text(tree, tvb, offset, -1, "Indication Field: %s",tvb_format_text(tvb,offset,tvb_length_remaining(tvb, offset)));
|
|
|
|
ind_field_tree = proto_item_add_subtree(ind_field_item, ett_dpnss_ind_field);
|
|
|
|
offset = dissect_dpnss_sup_info_str(tvb, pinfo, ind_field_tree, offset);
|
2007-08-19 20:41:16 +00:00
|
|
|
break;
|
2007-08-19 20:26:08 +00:00
|
|
|
case DPNSS_CC_MSG_CRM:
|
|
|
|
/* 2.1.7 CLEAR REQUEST Message - CRM */
|
|
|
|
/* 2.1.8 CLEAR INDICATION Message - CIM */
|
|
|
|
/* Clearing Cause */
|
|
|
|
proto_tree_add_item(tree, hf_dpnss_clearing_cause, tvb, offset, 1, FALSE);
|
|
|
|
offset++;
|
|
|
|
/* Indication Field (Optional) */
|
|
|
|
if(tvb_end_offset>offset){
|
|
|
|
ind_field_item = proto_tree_add_text(tree, tvb, offset, -1, "Indication Field: %s",tvb_format_text(tvb,offset,tvb_length_remaining(tvb, offset)));
|
|
|
|
ind_field_tree = proto_item_add_subtree(ind_field_item, ett_dpnss_ind_field);
|
|
|
|
offset = dissect_dpnss_sup_info_str(tvb, pinfo, ind_field_tree, offset);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
case DPNSS_CC_MSG_RRM:
|
|
|
|
/* 2.1.10 RECALL REJECTION Message - RRM */
|
|
|
|
/* Rejection Cause */
|
|
|
|
proto_tree_add_item(tree, hf_dpnss_rejection_cause, tvb, offset, 1, FALSE);
|
|
|
|
/* Indication Field (Optional) */
|
|
|
|
if(tvb_end_offset>offset){
|
|
|
|
ind_field_item = proto_tree_add_text(tree, tvb, offset, -1, "Indication Field: %s",tvb_format_text(tvb,offset,tvb_length_remaining(tvb, offset)));
|
|
|
|
ind_field_tree = proto_item_add_subtree(ind_field_item, ett_dpnss_ind_field);
|
|
|
|
offset = dissect_dpnss_sup_info_str(tvb, pinfo, ind_field_tree, offset);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
case DPNSS_CC_MSG_SSRM_I:
|
|
|
|
/* 2.1.11 SUBSEQUENT SERVICE REQUEST Message (INCOMPLETE) - SSRM(I) */
|
|
|
|
sel_field_item = proto_tree_add_text(tree, tvb, offset, -1, "Selection Field: %s",tvb_format_text(tvb,offset,tvb_length_remaining(tvb, offset)));
|
|
|
|
sel_field_tree = proto_item_add_subtree(sel_field_item, ett_dpnss_sel_field);
|
|
|
|
/* Selection Field */
|
|
|
|
offset = dissect_dpnss_sup_info_str(tvb, pinfo, sel_field_tree, offset);
|
2007-08-17 21:31:22 +00:00
|
|
|
break;
|
2007-08-19 20:26:08 +00:00
|
|
|
case DPNSS_CC_MSG_SSRM_C:
|
|
|
|
/* 2.1.12 SUBSEQUENT SERVICE REQUEST Message (COMPLETE) - SSRM(C) */
|
|
|
|
/* Selection Field (Optional) */
|
|
|
|
if(tvb_end_offset>offset){
|
|
|
|
sel_field_item = proto_tree_add_text(tree, tvb, offset, -1, "Selection Field: %s",tvb_format_text(tvb,offset,tvb_length_remaining(tvb, offset)));
|
|
|
|
sel_field_tree = proto_item_add_subtree(sel_field_item, ett_dpnss_sel_field);
|
|
|
|
offset = dissect_dpnss_sup_info_str(tvb, pinfo, sel_field_tree, offset);
|
|
|
|
}
|
|
|
|
break;
|
2007-08-17 21:31:22 +00:00
|
|
|
default:
|
2007-08-19 20:26:08 +00:00
|
|
|
proto_tree_add_text(tree, tvb, offset, 1, "Unknown or Dissection of this message not supported yet");
|
2007-08-17 21:31:22 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
/* Code to actually dissect the packets */
|
|
|
|
static void
|
|
|
|
dissect_dpnss(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
|
|
{
|
|
|
|
int offset = 0;
|
|
|
|
proto_item *item;
|
|
|
|
proto_tree *dpnss_tree;
|
|
|
|
guint8 octet;
|
|
|
|
|
|
|
|
/* Make entries in Protocol column and Info column on summary display */
|
|
|
|
if (check_col(pinfo->cinfo, COL_PROTOCOL))
|
|
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "DPNSS/DASS2");
|
|
|
|
|
2007-08-19 20:26:08 +00:00
|
|
|
item = proto_tree_add_item(tree, proto_dpnss, tvb, 0, -1, FALSE);
|
|
|
|
dpnss_tree = proto_item_add_subtree(item, ett_dpnss);
|
|
|
|
proto_tree_add_item(dpnss_tree, hf_dpnss_msg_grp_id, tvb, offset, 1, FALSE);
|
|
|
|
octet = tvb_get_guint8(tvb,offset)>>4;
|
|
|
|
switch (octet){
|
|
|
|
case DPNNS_MESSAGE_GROUP_CC:
|
|
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
2007-08-19 20:41:16 +00:00
|
|
|
col_set_str(pinfo->cinfo, COL_INFO, "CC MSG ");
|
2007-08-19 20:26:08 +00:00
|
|
|
/* Call Control Message Group */
|
|
|
|
dissect_dpnss_cc_msg(tvb, pinfo, dpnss_tree);
|
|
|
|
break;
|
|
|
|
case DPNNS_MESSAGE_GROUP_E2E:
|
|
|
|
/* End-to-End Message Group */
|
|
|
|
dissect_dpnss_e2e_msg(tvb, pinfo, dpnss_tree);
|
|
|
|
break;
|
|
|
|
case DPNNS_MESSAGE_GROUP_LbL:
|
|
|
|
/* Link-by-Link Message Group */
|
|
|
|
dissect_dpnss_LbL_msg(tvb, pinfo, dpnss_tree);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
proto_tree_add_text(tree, tvb, offset, 1, "Unknown Message Group");
|
|
|
|
break;
|
2007-08-17 21:31:22 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2007-08-19 20:26:08 +00:00
|
|
|
|
2007-08-17 21:31:22 +00:00
|
|
|
/* Register the protocol with Wireshark */
|
|
|
|
/* If this dissector uses sub-dissector registration add a registration routine.
|
|
|
|
This format is required because a script is used to find these routines and
|
|
|
|
create the code that calls these routines.
|
|
|
|
*/
|
|
|
|
void
|
|
|
|
proto_reg_handoff_dpnss(void)
|
|
|
|
{
|
|
|
|
dissector_handle_t dpnss_handle;
|
|
|
|
|
|
|
|
dpnss_handle = create_dissector_handle(dissect_dpnss, proto_dpnss);
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
proto_register_dpnss(void)
|
|
|
|
{
|
|
|
|
|
|
|
|
|
|
|
|
/* Setup list of header fields See Section 1.6.1 for details*/
|
|
|
|
static hf_register_info hf[] = {
|
|
|
|
{ &hf_dpnss_msg_grp_id,
|
|
|
|
{ "Message Group Identifier", "dpnss.msg_grp_id",
|
|
|
|
FT_UINT8, BASE_DEC, VALS(dpnss_msg_grp_id_vals), 0xf0,
|
|
|
|
"Message Group Identifier", HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_dpnss_cc_msg_type,
|
|
|
|
{ "Call Control Message Type", "dpnss.cc_msg_type",
|
|
|
|
FT_UINT8, BASE_DEC, VALS(dpnss_cc_msg_type_vals), 0x0f,
|
|
|
|
"Call Control Message Type", HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_dpnss_e2e_msg_type,
|
|
|
|
{ "END-TO-END Message Type", "dpnss.e2e_msg_type",
|
|
|
|
FT_UINT8, BASE_DEC, VALS(dpnss_e2e_msg_type_vals), 0x0f,
|
|
|
|
"END-TO-END Message Type", HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_dpnss_LbL_msg_type,
|
|
|
|
{ "LINK-BY-LINK Message Type", "dpnss.lbl_msg_type",
|
|
|
|
FT_UINT8, BASE_DEC, VALS(dpnss_LbL_msg_type_vals), 0x0f,
|
|
|
|
"LINK-BY-LINK Message Type", HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_dpnss_ext_bit,
|
|
|
|
{ "Extension bit", "dpnss.ext_bit",
|
|
|
|
FT_BOOLEAN, 8, TFS(&dpnss_ext_bit_vals), 0x80,
|
|
|
|
"Extension bit", HFILL }
|
|
|
|
},
|
2007-08-19 20:26:08 +00:00
|
|
|
{ &hf_dpnss_ext_bit_notall,
|
|
|
|
{ "Extension bit", "dpnss.ext_bit_notall",
|
|
|
|
FT_BOOLEAN, 8, TFS(&dpnss_ext_bit_no_ext_vals), 0x80,
|
|
|
|
"Extension bit", HFILL }
|
|
|
|
},
|
2007-08-17 21:31:22 +00:00
|
|
|
{ &hf_dpnss_sic_type,
|
|
|
|
{ "Type of data", "dpnss.sic_type",
|
|
|
|
FT_UINT8, BASE_DEC, VALS(dpnss_sic_type_type_vals), 0x70,
|
|
|
|
"Type of data", HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_dpnss_sic_details_for_speech,
|
|
|
|
{ "Details for Speech", "dpnss.sic_details_for_speech",
|
2007-08-19 20:26:08 +00:00
|
|
|
FT_UINT8, BASE_DEC, VALS(dpnss_sic_details_for_speech_vals), 0x0f,
|
2007-08-17 21:31:22 +00:00
|
|
|
"Details for Speech", HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_dpnss_sic_details_for_data1,
|
|
|
|
{ "Data Rates", "dpnss.sic_details_for_data1",
|
2007-08-19 20:26:08 +00:00
|
|
|
FT_UINT8, BASE_DEC, VALS(dpnss_sic_details_for_data_rates1_vals), 0x0f,
|
2007-08-17 21:31:22 +00:00
|
|
|
"Type of Data (010) : Data Rates", HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_dpnss_sic_details_for_data2,
|
|
|
|
{ "Data Rates", "dpnss.sic_details_data2",
|
2007-08-19 20:26:08 +00:00
|
|
|
FT_UINT8, BASE_DEC, VALS(dpnss_sic_details_for_data_rates2_vals), 0x0f,
|
2007-08-17 21:31:22 +00:00
|
|
|
"Type of Data (011) : Data Rates", HFILL }
|
|
|
|
},
|
2007-08-19 20:26:08 +00:00
|
|
|
{ &hf_dpnss_dest_addr,
|
|
|
|
{ "Destination Address", "dpnss.dest_addr",
|
|
|
|
FT_STRING, BASE_NONE, NULL, 0x0,
|
|
|
|
"Destination Address", HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_dpnss_sic_oct2_data_type,
|
|
|
|
{ "Data Type", "dpnss.sic_oct2_data_type",
|
|
|
|
FT_UINT8, BASE_DEC, VALS(dpnss_sic_oct2_data_type_vals), 0x03,
|
|
|
|
"Data Type", HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_dpnss_sic_oct2_duplex,
|
|
|
|
{ "Data Type", "dpnss.sic_oct2_duplex",
|
|
|
|
FT_BOOLEAN, 8, TFS(&dpnss_duplex_vals), 0x08,
|
|
|
|
"Data Type", HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_dpnss_sic_oct2_net_ind_clk,
|
|
|
|
{ "Network Independent Clock", "dpnss.sic_oct2_sync_data_format",
|
|
|
|
FT_BOOLEAN, 8, TFS(&dpnss_sic_oct2_net_ind_clk_vals), 0x40,
|
|
|
|
"Network Independent Clock", HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_dpnss_sic_oct2_sync_data_format,
|
|
|
|
{ "Data Format", "dpnss.sic_oct2_sync_data_format",
|
|
|
|
FT_BOOLEAN, 8, TFS(&dpnss_sic_oct2_sync_data_format_vals), 0x20,
|
|
|
|
"Data Format", HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_dpnss_sic_oct2_sync_byte_timing,
|
|
|
|
{ "Byte Timing", "dpnss.sic_oct2_sync_byte_timing",
|
|
|
|
FT_BOOLEAN, 8, TFS(&dpnss_provided_vals), 0x10,
|
|
|
|
"Byte Timing", HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_dpnss_sic_oct2_async_data,
|
|
|
|
{ "Data Format", "dpnss.sic_oct2_async_data",
|
|
|
|
FT_UINT8, BASE_DEC, VALS(dpnss_sic_oct2_async_data_type_vals), 0x30,
|
|
|
|
"Data Format", HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_dpnss_sic_oct2_async_flow_ctrl,
|
|
|
|
{ "Flow Control", "dpnss.sic_oct2_async_flow_ctrl",
|
|
|
|
FT_BOOLEAN, 8, TFS(&dpnss_flow_control_vals), 0x40,
|
|
|
|
"Flow Control", HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_dpnss_clearing_cause,
|
|
|
|
{ "Clearing Cause", "dpnss.clearing_cause",
|
|
|
|
FT_UINT8, BASE_DEC, VALS(dpnss_clearing_cause_code_vals), 0x0,
|
|
|
|
"Clearing Cause", HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_dpnss_rejection_cause,
|
|
|
|
{ "Rejection Cause", "dpnss.rejection_cause",
|
|
|
|
FT_UINT8, BASE_DEC, VALS(dpnss_clearing_cause_code_vals), 0x0,
|
|
|
|
"Rejection Cause", HFILL }
|
|
|
|
},
|
2007-08-17 21:31:22 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
/* Setup protocol subtree array */
|
|
|
|
static gint *ett[] = {
|
|
|
|
&ett_dpnss,
|
2007-08-19 20:26:08 +00:00
|
|
|
&ett_dpnss_sel_field,
|
|
|
|
&ett_dpnss_sic_field,
|
|
|
|
&ett_dpnss_ind_field,
|
2007-08-17 21:31:22 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
/* Register the protocol name and description */
|
|
|
|
proto_dpnss = proto_register_protocol("Digital Private Signalling System No 1","DPNSS", "dpnss");
|
|
|
|
register_dissector("dpnss", dissect_dpnss, proto_dpnss);
|
|
|
|
|
|
|
|
/* Required function calls to register the header fields and subtrees used */
|
|
|
|
proto_register_field_array(proto_dpnss, hf, array_length(hf));
|
|
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
|
|
|
2007-08-18 03:19:44 +00:00
|
|
|
}
|