fxo lines no audio problem

[babak.yakhchali]

Hi

I' trying to use a 2811 gateway to connect pstn lines to an IP PBX, calls are connected and I can see rtp going to gateway but no rtp is sent to IP PBX and no audio is heard. this is the output of "show inventory":

NAME: "2811 chassis", DESCR: "2811 chassis"
PID: CISCO2811 , VID: V08 , SN: FCZ142671KW

NAME: "2nd generation four port FXO voice interface daughtercard on Slot 0 SubSlot 0", DESCR: "2nd generation four port FXO voice interface daughtercard"
PID: VIC2-4FXO , VID: V03 , SN: FOC12430EUS

NAME: "2nd generation four port FXO voice interface daughtercard on Slot 0 SubSlot 1", DESCR: "2nd generation four port FXO voice interface daughtercard"
PID: VIC2-4FXO , VID: V02 , SN: FOC11435L14

NAME: "2nd generation four port FXO voice interface daughtercard on Slot 0 SubSlot 2", DESCR: "2nd generation four port FXO voice interface daughtercard"
PID: VIC2-4FXO , VID: V03 , SN: FOC12292UR9

NAME: "2nd generation four port FXO voice interface daughtercard on Slot 0 SubSlot 3", DESCR: "2nd generation four port FXO voice interface daughtercard"
PID: VIC2-4FXO , VID: V03 , SN: FOC13082N3G

NAME: "PVDMII DSP SIMM with four DSPs on Slot 0 SubSlot 4", DESCR: "PVDMII DSP SIMM with four DSPs"
PID: PVDM2-64 , VID: V01 , SN: FOC12232CRL

NAME: "High Density Voice2 Network module with on board two port interface on Slot 1", DESCR: "High Density Voice2 Network module with on board two port interface "
PID: NM-HDV2-2T1/E1 , VID: V03 , SN: FOC11225606

NAME: "2nd generation four port FXO voice interface daughtercard on Slot 1 SubSlot 0", DESCR: "2nd generation four port FXO voice interface daughtercard"
PID: VIC2-4FXO= , VID: V , SN: FOC100504RL

NAME: "On-board VWIC2-2MFT-T1/E1 - 2-Port RJ-48 Multiflex Trunk - T1/E1 on Slot 1 SubSlot 1", DESCR: "On-board VWIC2-2MFT-T1/E1 - 2-Port RJ-48 Multiflex Trunk - T1/E1"
PID: , VID: 1.1, SN:

NAME: "PVDMII DSP SIMM with Two DSPs on Slot 1 SubSlot 5", DESCR: "PVDMII DSP SIMM with Two DSPs"
PID: PVDM2-32 , VID: V01 , SN: FOC10490KZB

Gateway configuration is attached 

[Dennis Mink · Accepted solution]

Babak,

can you attach the debug ccsip message output of a fail call on the gateway to the post and state what the called and calling number are and the IP of your PBX.

also, you are using a voice class to your PBX, containing G711 only, is that set up on the PBX side of the trunk as well?

cheers

[babak.yakhchali]

Thanks dennis
capturing sip packets revealed that there were firewall issues and sip packets from my IP PBX were blocked so call never was really connected. Firewall is removed from the way but
now there is another problem:
Feb 5 04:58:27.865: %DSMP-3-DSP_TIMEOUT: DSP timeout on DSP 0/1:1: event 0xDC, DSMP timed out, while waiting for statistics from the DSP. DSMP State = S_DSMP_COLLECTING_STATS, chnl info(0, 1, 1)

and after that all fxo lines show "changed state to Administrative Shutdown" and come up automatically!!
Is this because of faulty DSPs?

[R0g22]

Do you see anything with "show voice dsp error" ? It could be a bad DSP as well. You can try a re-seat for the PVDM module. If it continues to happen, replace it. Another thing, upgrade the IOS to 15.1 as well.

[babak.yakhchali]

thanks. it looks there is something wrong with dsp.