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Questions on DSP which trapped in "busy" state.

Unanswered Question
May 26th, 2003
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I installed 3662 with 2 E1 connection to PSTN exchange.

Using R2 signalling with CO, and tested call connections between IP Phones and POTS phones.

During that tests, I found some DSP channels allocated to each E1 time slot were changed to state "busy" and never get back to "IDLE".


I made additional test and find that only when I dialed the destination phone number and hooked on before hearing "ring-tone", the DSP channel associated to that time slot the call seized got trapped in state "busy" and never backed to "IDLE" state.


In debugging log, the State Transition is stuck in "S_WAIT_STATS".


Following is the status display of my system.

Several channels are in "busy" state and call setup is not possible through this channels.


If any one faced this problem and solved this, advice me.

Is this a bug?

Thanks in advance...


SYSTEM : Cisco 3662

E1 CARD: NM-HDV-2E1-60 (VWIC-2MFT-E1-DI)

DSP Type : C549

DSP FW version : 4.1.28


===========================================================

VGW#sh voice dsp


DSP DSP DSPWARE CURR BOOT PAK TX/RX

TYPE NUM CH CODEC VERSION STATE STATE RST AI VOICEPORT TS ABORT PACK COUNT

==== === == ======== ======= ===== ======= === == ========= == ===== ============

C549 000 01 None 4.1.28 busy idle 7 0 4/0:1 09 1 146/213

02 {medium} 4.1.28 IDLE idle 0 4/0:1 10 5 3931/2836

03 None 4.1.28 busy idle 0 4/0:1 11 18 828/931

04 {medium} 4.1.28 IDLE idle 0 4/0:1 12 7 1418/777

C549 001 01 None 4.1.28 busy idle 6 0 4/0:1 13 13 101/331

02 {medium} 4.1.28 IDLE idle 0 4/0:1 14 11 4066/4020

03 {medium} 4.1.28 IDLE idle 0 4/0:1 15 1 3469/1311

04 {medium} 4.1.28 IDLE idle 0 4/0:1 17 1 1766/1071

C549 002 01 None 4.1.28 busy idle 8 0 4/0:1 18 10 528/747

02 {medium} 4.1.28 IDLE idle 0 4/0:1 19 2 1590/979

03 {medium} 4.1.28 IDLE idle 0 4/0:1 20 7 1842/675

04 {medium} 4.1.28 IDLE idle 0 4/0:1 21 6 596/687

C549 003 01 {medium} 4.1.28 IDLE idle 7 0 4/0:1 22 8 2191/1293

02 None 4.1.28 busy idle 0 4/0:1 23 1 2397/907

03 {medium} 4.1.28 IDLE idle 0 4/0:1 24 10 1070/1190

04 {medium} 4.1.28 IDLE idle 0 4/0:1 25 3 4421/4624

C549 004 01 {medium} 4.1.28 IDLE idle 6 0 4/0:2 26 0 3597/2290

02 {medium} 4.1.28 IDLE idle 0 4/0:2 27 0 1753/1392

03 {medium} 4.1.28 IDLE idle 0 4/0:2 28 1 1694/1947

04 {medium} 4.1.28 IDLE idle 0 4/0:2 29 2 2258/2425

C549 005 01 {medium} 4.1.28 IDLE idle 6 0 4/0:2 30 5 50586/51476

02 None 4.1.28 busy idle 0 4/0:2 31 5 1845/1982

C549 013 01 {medium} 4.1.28 IDLE idle 6 0 4/0:1 01 0 1049/1216

02 {medium} 4.1.28 IDLE idle 0 4/0:1 02 0 490/641

03 {medium} 4.1.28 IDLE idle 0 4/0:1 03 0 195/330

04 None 4.1.28 busy idle 0 4/0:1 04 0 140/269

C549 014 01 None 4.1.28 busy idle 7 0 4/0:1 05 5 45/304

02 {medium} 4.1.28 IDLE idle 0 4/0:1 06 0 1167/754

03 {medium} 4.1.28 IDLE idle 0 4/0:1 07 3 558/765

04 {medium} 4.1.28 IDLE idle 0 4/0:1 08 1 151/232


VGW#sh voice call sum

PORT CODEC VAD VTSP STATE VPM STATE

============ ======== === ==================== ======================

4/0:1.1 - - - R2_Q421_IDLE

4/0:1.2 - - - R2_Q421_IDLE

4/0:1.3 - - - R2_Q421_IDLE

4/0:1.4 None y S_WAIT_STATS R2_Q421_IDLE

4/0:1.5 None y S_WAIT_STATS R2_Q421_IDLE

4/0:1.6 - - - R2_Q421_IDLE

4/0:1.7 - - - R2_Q421_IDLE

4/0:1.8 - - - R2_Q421_IDLE

4/0:1.9 None y S_WAIT_STATS R2_Q421_IDLE

4/0:1.10 - - - R2_Q421_IDLE

4/0:1.11 None y S_WAIT_STATS R2_Q421_IDLE

4/0:1.12 - - - R2_Q421_IDLE

4/0:1.13 None y S_WAIT_STATS R2_Q421_IDLE

4/0:1.14 - - - R2_Q421_IDLE

4/0:1.15 - - - R2_Q421_IDLE

4/0:1.17 - - - R2_Q421_IDLE

4/0:1.18 None y S_WAIT_STATS R2_Q421_IDLE

4/0:1.19 - - - R2_Q421_IDLE

4/0:1.20 - - - R2_Q421_IDLE

4/0:1.21 - - - R2_Q421_IDLE

4/0:1.22 - - - R2_Q421_IDLE

4/0:1.23 None y S_WAIT_STATS R2_Q421_IDLE

4/0:1.24 - - - R2_Q421_IDLE

4/0:1.25 - - - R2_Q421_IDLE

4/0:2.26 - - - R2_Q421_IDLE

4/0:2.27 - - - R2_Q421_IDLE

4/0:2.28 - - - R2_Q421_IDLE

4/0:2.29 - - - R2_Q421_IDLE

4/0:2.30 - - - R2_Q421_IDLE

4/0:2.31 None y S_WAIT_STATS R2_Q421_IDLE



VGW#sh voice trace 4/0:2

:

4/0:2 29 State Transitions: timestamp (state, event) -> (state, event) ...

1206423.588 (R2_Q421_IDLE, E_DSP_SIG_0000) ->

1206423.592 (R2_Q421_IC_SEIZE, E_HTSP_SETUP_ACK) ->

1206424.796 (R2_Q421_IC_WAIT_ANSWER, E_HTSP_SETUP_ACK) ->

1206424.796 (R2_Q421_IC_WAIT_ANSWER, E_HTSP_PROCEEDING) ->

1206424.800 (R2_Q421_IC_WAIT_ANSWER, E_DSP_SIG_0000) ->

1206428.212 (R2_Q421_IC_WAIT_ANSWER, E_HTSP_VOICE_CUT_THROUGH) ->

1206428.212 (R2_Q421_IC_WAIT_ANSWER, E_HTSP_CONNECT) ->

1206433.024 (R2_Q421_IC_ANSWER, E_HTSP_RELEASE_REQ) ->

1206433.224 (R2_Q421_IC_CLR_BWD, E_HTSP_EVENT_TIMER) ->

1206433.224 (R2_Q421_IC_CLR_BWD, E_DSP_SIG_0000) ->

1206435.224 (R2_Q421_IC_CLR_BWD, E_HTSP_EVENT_TIMER) ->

1206435.228 (R2_Q421_IC_CLR_BWD, E_DSP_SIG_0000) ->

1206436.516 (R2_Q421_IC_CLR_BWD, E_DSP_SIG_1000) ->

1206438.516 (R2_Q421_IC_CLR_FWD, E_HTSP_EVENT_TIMER) ->

1217302.920 (R2_Q421_IDLE, E_DSP_INTERFACE_INFO) ->

1217303.680 (R2_Q421_IDLE, E_DSP_SIG_1000) ->

1218997.132 (R2_Q421_IDLE, E_DSP_INTERFACE_INFO) ->

1218997.900 (R2_Q421_IDLE, E_DSP_SIG_1000) ->


4/0:2 31 State Transitions: timestamp (state, event) -> (state, event) ...

1216196.548 (S_SETUP_INDICATED, E_CC_PROCEEDING) ->

1216196.616 (S_PROCEEDING, E_VTSP_DSM_DIALING_COMPLETE) ->

1216197.340 (S_PROCEEDING, E_CC_ALERT) ->

1216197.340 (S_ALERTING, E_TSP_R2_DIAL) ->

1216197.568 (S_ALERTING, E_VTSP_DIAL_COMPLETE) ->

1216197.572 (S_WAIT_HOST_DISC, E_CC_DISCONNECT) ->

1216197.592 (S_WAIT_STATS, E_VTSP_DSM_DIALING_COMPLETE) ->

1216212.568 (S_WAIT_STATS, E_TIMER) ->

1217298.404 (S_WAIT_STATS, E_TSP_DISCONNECT_IND) ->

1218992.168 (S_WAIT_STATS, E_TSP_DISCONNECT_IND) ->


State Transitions: timestamp (state, event) -> (state, event) ...

1216195.404 (R2_Q421_IDLE, E_DSP_SIG_0000) ->

1216195.408 (R2_Q421_IC_SEIZE, E_HTSP_SETUP_ACK) ->

1216196.548 (R2_Q421_IC_WAIT_ANSWER, E_HTSP_SETUP_ACK) ->

1216196.548 (R2_Q421_IC_WAIT_ANSWER, E_HTSP_PROCEEDING) ->

1216196.552 (R2_Q421_IC_WAIT_ANSWER, E_DSP_SIG_0000) ->

1216197.568 (R2_Q421_IC_WAIT_ANSWER, E_DSP_SIG_1000) ->

1216199.568 (R2_Q421_IC_CLR_FWD, E_HTSP_EVENT_TIMER) ->

1217303.680 (R2_Q421_IDLE, E_DSP_INTERFACE_INFO) ->

1217304.436 (R2_Q421_IDLE, E_DSP_SIG_1000) ->

1218997.900 (R2_Q421_IDLE, E_DSP_INTERFACE_INFO) ->

1218998.488 (R2_Q421_IDLE, E_DSP_SIG_1000) ->


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jbayuka Mon, 06/02/2003 - 06:47
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  • Bronze, 100 points or more

Assuming that your are running MGCP, this could be the bug CSCdu36732. I find this is fixed in 12.2(3.1)T.


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