ERRCC_CODEC_MISMATCH caps mismatch

[Chris Deren]

Looking at the snippet of a SDL trace does anyone have a definite answer as to why CUCM is reporting this error? Is it the codec pass-through capability of the MTP? This is on CUCM 11.5.

54444505.000 |19:56:09.088 |SdlSig |MrmAllocateMtpResourceReq |waiting |MediaResourceCdpc(3,100,141,47973) |MediaResourceCdpc(3,100,141,47973) |4,100,14,11249594.4^10.12.144.53^* |[R:N-H:0,N:0,L:0,V:0,Z:0,D:0] CI=64819986 MRGLPkid=7e2c6802-f4fe-6295-d4e8-cd50cb79221c Kpbs=0 RegionA=SIP-G729-G711 CapA=5 RegionB=AU1 CapB=21 SuppressFlag=0 DeviceCapReqd= [0x59 DETECT_2833 PT_2833 PT_CAP RTCP_PT_CAP] MandatoryCapabilities= [0x0] Type=3 Count=1 MTPRequired=F tryPassThru=F
54444505.001 |19:56:09.088 |AppInfo |waiting_MrmAllocateMtpResourceReq: If pt cap is requested , try to allocate rtcp pt capable mtp
54444505.002 |19:56:09.088 |AppInfo |MediaResourceCdpc(47973)::waiting_MrmAllocateMtpResourceReq - CI=64819986 Count=1 TryPassThru=0
54444505.003 |19:56:09.088 |AppInfo |MediaResourceCdpc(47973)::findDeviceGivenList - Name=AU-MTP711-01 type=1 weight=0
54444505.004 |19:56:09.088 |AppInfo |MediaResourceCdpc::getNextMTPDevice MtpDevice=AU-MTP711-01 Cepn=4beb9f16-29e4-6a01-d4fd-70133a71ac8c devCap=89 resoureCount=1
54444505.005 |19:56:09.088 |AppInfo |MediaResourceCdpc(47973)::sendMtpAllocateRequestToDevice MtpResource=AU-MTP711-01 Cepn=4beb9f16-29e4-6a01-d4fd-70133a71ac8c
54444506.000 |19:56:09.088 |SdlSig-O |AllocateMtpResourceReq |NA RemoteSignal |MediaTerminationPointControl(4,100,139,425701) |MediaResourceCdpc(3,100,141,47973) |4,100,14,11249594.4^10.12.144.53^* |[R:N-H:0,N:0,L:0,V:0,Z:0,D:0] CI=64819986 Kpbs=0 SuppressFlag=0 RegionA=SIP-G729-G711 CapsA[5] = cap=4(20),cap=11(20),cap=12(20),cap=112(20),cap=114(20) RegionB=AU1 CapsB[21] = cap=2(60),cap=3(60),cap=4(60),cap=5(60),cap=6(60),cap=7(60),cap=8(60),cap=9(60),cap=10(60),cap=11(60),cap=12(60),cap=15(60),cap=16(60),cap=18(60),cap=19(60),cap=20(60),cap=25(60),cap=86(60),cap=89(60),cap=40(60),cap=41(60) DeviceCapability= [0x59 DETECT_2833 PT_2833 PT_CAP RTCP_PT_CAP] MandatoryCaps= [0x0] Type=3 PassThru=F Count=1 ThrottleMtpPercent=95
54444507.000 |19:56:09.089 |SdlSig-I |AllocateMtpResourceErr |resource_rsvp |MediaResourceCdpc(3,100,141,47973) |MediaTerminationPointControl(4,100,139,425701) |4,100,14,11249594.4^10.12.144.53^* |[R:N-H:0,N:0,L:0,V:0,Z:0,D:0] CI=64819986 deviceCapIntersection= [0x59 DETECT_2833 PT_2833 PT_CAP RTCP_PT_CAP] ResourceCount=1 AllocateErrBitset= [0x64 ERRCC_CODEC_MISMATCH ERRCC_CODEC_MISMATCH_A ERRCC_CODEC_MISMATCH_B]
54444507.001 |19:56:09.089 |AppInfo |MediaResourceCdpc(47973)::resource_rsvp_AllocateMtpResourceErr Device=AU-MTP711-01 deviceCapIntersec=89

[Ayodeji Okanlawon]

Chris,

 The packetization period seem to be the issue here. Side A is doing 20ms and side B is 60ms. You will need a hardware IOS MTP for this

[Chris Deren]

Thanks Deji, I did find misconfiguration on the region and will get it corrected Monday.  However I am puzzled as to where the (60) capability is coming from, I thought it ts packetization size and not payload size in bytes, can you confirm?  In either case any idea why it would be anything other than 20 for the ICT call to IPIVR over G711ulaw?

[Ayodeji Okanlawon]

Chris totally error from me. It is indeed packetization. The packetization is 60ms. This looks like the issue you are having. You will need a hardware based MTP to transrate this.

[Chris Deren]

Thanks, got me confused there for a sec :-)

Any idea why Cisco IPIVR over ICT would advertise 60 ms packetization size for all codecs? I cannot see I have ever seen it like that.

[Ayodeji Okanlawon]

Can you send the full logs ( and include the calling and called number)..Are you saying that the region between the endpoint and MTP=sip-g729-11 and region between MTP and IVR= AU1?

Trying to ubderstand the region matrix before we delve into the caps. I am sure we can figure it out