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IVR Transcoding on CUBE

Hello! 

I've got CUBE on 2901 with IOS c2900-universalk9_npe-mz.SPA.154-3.M.bin.

SIP provider uses g711 alaw  codec for SIP trunk.

I need to transcode incoming calls from g711a to g711u before playing IVR script. 

I've configured transcoding profile on CUBE(in telephony-service, also I can use LTI as I know), but how can I enable transcoding on CUBE, so that it works in SRST mode too?

How many dial-peers do I need for solving this problem?

One incoming from provider with hard-coded g711a and another for IVR with g711u?

I know that transcoding turns on when one call leg is in one codec and second call leg is in another codec. How can I terminate incoming call from one to another dial-peer?

I tried with voice translation rules, but it doesn't work, router chooses incorrect DP or don't chooses outgoing call leg at all....

 

Sample of config:

 

application
 service test flash:/ivrfax.vxml
!
voice translation-rule 3
 rule 1 /308042/ /555/
!

voice translation-profile 308042_income
 translate called 3

 

dial-peer voice 1 voip
 description To_CUCM
 destination-pattern [1-8]...
 session protocol sipv2
 session target ipv4:10.128.2.2
dtmf-relay rtp-nte 
 codec g711alaw
 no vad
!
dial-peer voice 2 voip
 description To_CUCM
 destination-pattern [1-8]...
 session protocol sipv2
 session target ipv4:10.128.2.3
 dtmf-relay rtp-nte
 codec g711alaw
 no vad
!
dial-peer voice 308042 voip
 description ---Outgoing to SIP 308042---
 translation-profile outgoing 308042
 destination-pattern 9T
 session protocol sipv2
 session target sip-server
dtmf-relay rtp-nte 
 codec g711alaw
 no vad
!
dial-peer voice 30804242 voip
 description from_Provider_incoming
 translation-profile incoming 308042_income
 session protocol sipv2
 session target sip-server
 incoming called-number 308042
dtmf-relay rtp-nte
 codec g711alaw
 no vad
!
dial-peer voice 555 voip
 description IVR
 service test
 session protocol sipv2
incoming called-number 555
dtmf-relay rtp-nte 
 codec g711ulaw
 no vad

 

 

Thanks for any help or information!

 

5 REPLIES
Cisco Employee

it should work in SRST What

it should work in SRST 

What is your call flow and what is your current issue apart from xcoder

New Member

My issue is problem with

My issue is problem with xcoding of incoming calls to IVR. I don't understand how can I do it using dial-peers or voice-translation rules. In debug ccsip mess it always chooses dial-peers 1 or (wrong) or there is not any outgoing DP when I change some settings in config. What I am missing for?

New Member

So, can anybody help me?I

So, can anybody help me?

I tried to only one one incoming dila-peer, but I don't hear anything in my audiofile via call, call establishes in g711a codec.

https://supportforums.cisco.com/discussion/11978696/transcode-incoming-calls-and-ivr

Hall of Fame Super Silver

Have you reviewed this for

Have you reviewed this for dial-peer matching understanding:

http://www.cisco.com/c/en/us/support/docs/voice/call-routing-dial-plans/14074-in-dial-peer-match.html

Where is the call going to connect under SRST, will the IVR still be available?

You can use telephony-service (CME) and register xcoders to it, keep in mind that to transcode between u-law to a-law you will require universal transcoders and not traditional transcoders, so review config for universal transcoders.

Chris

New Member

Yes, I read this document. I

Yes, I read this document. 

I've created ccm group, sccp local interface, dspfarm profile, and registered it to telephony-service. It's ok. 

Yes, IVR still be availible under SRST, it runs as vxml script on router flash.

I configured router for inbound/outbound calls in g711a, and it works fine. But when using IVR with .wav file in g711u codec I've got a problem. I decided to use translation-profile on incoming dial-peer, from incoming number to internal IVR number, but it doesn't work. 

I attached config of xcoder, dial-peers and translation rules.

In normal mode (without IVR) I receive calls in dial-peer voice 30804242 voip and after it translate them to dial-peers 1 or 2 to CUCM phones.

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