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Translate MGCP command to H323

Cisco CallManager, Cisco CallManager Express and IP Video

Translate MGCP command to H323

Postby Guest » Wed Jan 05, 2011 11:16 am

Hi All,

 

Im helping one of my clients get School Messenger working. Im not 100% sure how it works, Im coming in after the fact, but something with DTMF isn being passed correctly. The way I understand it, School Messenger initiats a call to a Teacher of Principle at home and prompts them to hit a key to record a message. When they hit the key, School Messenger doesn recognize it. However, this does work internally.

 

The School Messenger support gave me this following line to insert into my config:

 

mgcp dtmf-relay voip codec all mode nte-ca

 


They stated that this has resolved this issue for other schools in the past. My issues is that our Gateway is H323 and I don want to migrate it to MGCP. Does anyone know if that command has a relative in the H323 world? I tried to following command, which didn work:

 

voice service voip

dtmf-interworking rtp-nte

 

 

Thanks for any help!

Guest
 

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Re:Translate MGCP command to H323

Postby Guest » Wed Jan 05, 2011 12:20 pm

Do you have the DTMF-relay command on you H323 VOIP dialpeers pointing back to your call manager/s?

 

such as this

 

dial-peer voice 2000 voip
preference 1
destination-pattern [1-7]...
session target ipv4:192.168.100.1
dtmf-relay h245-alphanumeric
codec g711ulaw
no vad

Guest
 

Re:Translate MGCP command to H323

Postby Guest » Wed Jan 05, 2011 1:00 pm

Hi,

 

If you share your H.323 router config then I can easily assist you in fixing this but I agree with the last reply that most probably you are sending in-band DTMF which is cuasing this.

 

Thanks

Ovais.

Guest
 

Re:Translate MGCP command to H323

Postby Guest » Wed Jan 05, 2011 2:02 pm

Here are my voip dial peers:

 

 

dial-peer voice 1000 voip
preference 1
destination-pattern 2485......
modem passthrough nse codec g711ulaw
voice-class codec 1
voice-class h323 1
session target ipv4:x.x.x.x
incoming called-number .
dtmf-relay h245-alphanumeric h245-signal cisco-rtp rtp-nte
fax-relay ecm disable
fax rate disable
no vad
dial-peer voice 1001 voip
preference 2
destination-pattern 2485......
modem passthrough nse codec g711ulaw
voice-class codec 1
voice-class h323 1
session target ipv4:x.x.x.x
incoming called-number .
dtmf-relay h245-alphanumeric h245-signal cisco-rtp rtp-nte
fax-relay ecm disable
fax rate disable
no vad

 

 

I had just dtmf-relay h245-alphanumeric, but I added the other commands and still no luck.

 

Thanks for the help!

Guest
 

Re:Translate MGCP command to H323

Postby Guest » Wed Jan 05, 2011 3:32 pm

Ok, I just re-read your initial post again, this is actually an outbound call from the CUCM and gateway perspective, could you please try this call again and run this on your router "show voice call status" I wanted to know exactly which voip dial-peer the call is landing on the voice gateway, if it is not your dial-peers 1000 or 1001 then you may have missed that DTMF command under that dialp-peer.

 

By the way this school system uses SIP to integrate with CUCM?

 

Thanks

Ovais.

Guest
 

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