03-02-2006 07:16 AM - edited 03-17-2019 08:38 PM
I have a client who is hubbed in city A and I am provideing them dial-tone in city B via a T1 with HDLC encap.
If I push their voice/fax out over the T1 to city B voice works just fine, but fax fails 80-90% of the time? I have re-directed their fax out city A PSTN and the fax works almost 100% of the time.
Here is a debug i have from the router the fax is hooked up to.
test-1#debug vpm all
20:02:49: htsp_dsp_message: SEND/RESP_SIG_STATUS: state=0xC timestamp=63044 systime=7216938
20:02:49: htsp_process_event: [1/0, FXSLS_ONHOOK, E_DSP_SIG_1100]fxsls_onhook_offhook htsp_setup_ind
20:02:49: [1/0] get_local_station_id calling num= calling name= calling time=10/12 21:36 orig
called=
20:02:49: TGRM: reg_invoke_tgrm_accept_call(1, TGRM_CALL_VOICE, TGRM_DIRECTION_IN, 0, 1, 0, 0)
20:02:49: TGRM: Calling vtsp_tsp_call_setup_ind().
20:02:49: TGRM: reg_invoke_tgrm_call_update(0, 1, 0, 0, 1, TGRM_CALL_BUSY, TGRM_CALL_VOICE,
TGRM_DIRECTION_IN)
20:02:49: dsp_digit_collect_on: [1/0] packet_len=20 channel_id=128 packet_id=35 min_inter_delay=240
max_inter_delay=9760 mim_make_time=10 max_make_time=100 min_brake_time=10 max_brake_time=100
20:02:49: htsp_process_event: [1/0, FXSLS_WAIT_SETUP_ACK, E_HTSP_SETUP_ACK]fxsls_check_auto_call
20:02:51: htsp_digit_ready(1/0): digit = 1
20:02:51: htsp_digit_ready(1/0): digit = 6
20:02:52: htsp_digit_ready(1/0): digit = 0
20:02:53: htsp_digit_ready(1/0): digit = 4
20:02:53: htsp_digit_ready(1/0): digit = 5
20:02:54: htsp_digit_ready(1/0): digit = 2
20:02:54: htsp_digit_ready(1/0): digit = 4
20:02:55: htsp_digit_ready(1/0): digit = 6
20:02:56: htsp_digit_ready(1/0): digit = 0
20:02:56: htsp_digit_ready(1/0): digit = 6
20:02:57: htsp_digit_ready(1/0): digit = 7
20:03:00: dsp_digit_collect_off: [1/0] packet_len=8 channel_id=128 packet_id=36
20:03:00: htsp_process_event: [1/0, FXSLS_OFFHOOK, E_HTSP_PROCEEDING]htsp_alert_notify
20:03:02: ipm_modem_relay_supported : false
20:03:02: ipm_modem_relay_supported : false
20:03:02: htsp_process_event: [1/0, FXSLS_OFFHOOK, E_HTSP_VOICE_CUT_THROUGH]htsp_connect: no_offhook
0 call_connected 0
20:03:09: htsp_process_event: [1/0, FXSLS_OFFHOOK, E_HTSP_CONNECT]fxsls_offhook_connect
20:03:09: [1/0] set signal state = 0x6 timestamp = 0
20:03:09: dsp_set_sig_state: [1/0] packet_len=12 channel_id=128 packet_id=39 state=0x6
timestamp=0x0htsp_call_feature:feature 24
htsp_call_feature: caller id enable 0x0 call_connected 1htsp_call_feature: feature 24, caller id not
enabled.
test-1#
test-1# #Fails below here#
test-1#
20:03:49: htsp_timer_stop3 htsp_release_req: cause 16, no_onhook 0
20:03:50: htsp_process_event: [1/0, FXSLS_CONNECT, E_HTSP_RELEASE_REQ]fxsls_connect_disc
20:03:50: htsp_timer_stop
20:03:50: [1/0] set signal state = 0xC timestamp = 0
20:03:50: dsp_set_sig_state: [1/0] packet_len=12 channel_id=128 packet_id=39 state=0xC timestamp=0x0
20:03:50: [1/0] set signal state = 0x4 timestamp = 750
20:03:50: dsp_set_sig_state: [1/0] packet_len=12 channel_id=128 packet_id=39 state=0x4
timestamp=0x2EE
20:03:50: htsp_timer - 950 msec
20:03:51: htsp_process_event: [1/0, FXSLS_CPC, E_HTSP_EVENT_TIMER]fxsls_cpc_timer
20:03:51: dsp_req_sig_state: [1/0] packet_len=8 channel_id=128 packet_id=40
20:03:51: htsp_dsp_message: SEND/RESP_SIG_STATUS: state=0xC timestamp=365 systime=7223104
20:03:51: htsp_timer - 60000 msec
20:03:51: htsp_process_event: [1/0, FXSLS_WAIT_ONHOOK, E_DSP_SIG_1100]fxsls_waitonhook_offhook
20:04:05: htsp_dsp_message: SEND/RESP_SIG_STATUS: state=0x4 timestamp=8567 systime=7224598
20:04:05: htsp_process_event: [1/0, FXSLS_WAIT_ONHOOK, E_DSP_SIG_0100]fxsls_waitonhook_onhook
20:04:05: htsp_timer_stop htsp_report_onhook_sig
20:04:05: TGRM: reg_invoke_tgrm_call_update(0, 1, 0, 0, 1, TGRM_CALL_IDLE, TGRM_CALL_VOICE,
TGRM_DIRECTION_IN)
20:04:05: ipm_dsprm_close_cleanup
test-1#
03-05-2006 01:21 PM
What gateway protocol are you using (MGCP, H.323, SIP)? What codec are you using over the WAN (g.729, g.711, etc)? Fax transmissions do not work well with compression. Depending on your infrastructure and preferences, you have several options. Take a look at the following link. Specifically, see the sections on fax relay and fax pass-through. Another option is to set the region for your fax devices to a region that uses g.711 (no compression).
http://www.cisco.com/en/US/products/ps6441/products_configuration_guide_book09186a008053b4d3.html
Hope this helps. If so, please rate the post.
Brandon
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