Transcoding issue

Unanswered Question
May 17th, 2007

Hi,

I am having CCM 4.2. I have created MRG list and associated the same with the device pool. DSP resources are from my Voice Gateway. I can see the transcoding profile get associated with the Call Manager.

I am using AutoAtendant with the help of the 5 seat IVR license coming along with CCM. I have created CTI Routepoint in the CCM for these applications.

Now calls to the these AutoAttendant are functioning properly from Phones which are in local LAN. But when I am calling from another site which is using G.729 codec , I am not able to call this number.

What could be problem ? I understand this could be a transcoding issue, but I have MRG list associated to my device pool, the DSP resources are also seen associated.

Please help.

Thanks,

Manu

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Chris Deren Thu, 05/17/2007 - 17:07

What Device Pool are the CTI ports using? make sure that they refeence the DP wich includes MRG with the transcoders. Try running "debug sccp" on the GW with the transcoding profie configured to look for more details.

Chris

manumohan200 Tue, 05/22/2007 - 06:51

Hi,

Thanks for your reply. I checked all the CTI ports , all are part of the same DP which has MRG. I am not getting any outputs from the debug sccp commands. Please help.

Thanks,

Manu

Mark Turpin Tue, 05/22/2007 - 07:05

Transcoders just work (99% of the time) when invoked. What would be helpful is to see the detailed CCM trace (with h245 and all gateway) for a call. You can then see if the transcoder is being invoked by CallManager or not.

manumohan200 Tue, 05/22/2007 - 07:27

Hi Mark,

Thanks for the reply. I am not able to see any outputs for these debugs. For invoking Transcoders any commands are needed in Routers and Call Manager.

Or how to see whether the transcoders are invoked are not ?

This is the output from the router.

VG2#sh dspfarm profile 11

Dspfarm Profile Configuration

Profile ID = 11, Service = TRANSCODING, Resource ID = 1

Profile Description :

Profile Admin State : UP

Profile Operation State : ACTIVE

Application : SCCP Status : ASSOCIATED

Resource Provider : FLEX_DSPRM Status : UP

Number of Resource Configured : 10

Number of Resource Available : 10

Codec Configuration

Codec : g711ulaw, Maximum Packetization Period : 30

Codec : g711alaw, Maximum Packetization Period : 30

Codec : g729ar8, Maximum Packetization Period : 60

Codec : g729abr8, Maximum Packetization Period : 60

Codec : gsmfr, Maximum Packetization Period : 20

VG2#

VG2#sh sccp

SCCP Admin State: UP

Gateway IP Address: 10.230.204.16, Port Number: 2000

IP Precedence: 2

User Masked Codec list: None

Call Manager: 10.230.204.11, Port Number: 2000

Priority: N/A, Version: 4.1, Identifier: 1

Call Manager: 10.230.204.10, Port Number: 2000

Priority: N/A, Version: 4.1, Identifier: 2

Transcoding Oper State: ACTIVE - Cause Code: NONE

Active Call Manager: 10.230.204.11, Port Number: 2000

TCP Link Status: CONNECTED, Profile Identifier: 11

Reported Max Streams: 20, Reported Max OOS Streams: 0

Supported Codec: g711ulaw, Maximum Packetization Period: 30

Supported Codec: g711alaw, Maximum Packetization Period: 30

Supported Codec: g729ar8, Maximum Packetization Period: 60

Supported Codec: g729abr8, Maximum Packetization Period: 60

Supported Codec: gsmfr, Maximum Packetization Period: 20

Supported Codec: rfc2833 dtmf, Maximum Packetization Period: 30

VG2#

Thanks,

Manu

Mark Turpin Tue, 05/22/2007 - 07:33

You need to go to your CallManager's serviceability webpage then enable a CallManager detailed trace. This will be done via the web interface. Once you have a trace of a call that fails, paste the CCM000000xxx.txt file that has the call in it. Don't forget to turn on h245 and all gateway.

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