dial-peer issue

Answered Question
Feb 12th, 2008

We are having an h323 gateway on a 2811 router, software 12.3(8r)T7, IOS image c2800nm-ipvoice-mz.123-11.T2.bin. We are trying to implement modem passthrough on a few select dial peers.

Problem is that "modem passthrough nse codec g711ulaw redundancy" command is working only on voip dial-peers, not pots dial-peers. Is there any solution?

I have this problem too.
0 votes
Correct Answer by davetucker about 8 years 10 months ago

Hi Das,

Don't mention it.

There is no way of applying a codec to a pots dial-peer as you are dealing with devices from the Analog/Digital Telephony era where codecs are not used (although ISDN uses PCM which similar to G.711). You only need to specify codecs in communication between to VoIP devices i.e. Router to Router.

Regards,

Dave

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Overall Rating: 5 (2 ratings)
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davetucker Tue, 02/12/2008 - 07:21

Hi,

The purpose of Modem passthrough is to ensure that modem calls are uncompressed. This does not apply to a POTS dial-peer as you are passing the call to an Analogue or Digital trunk, E1,FXO, E&M etc...

If you are having issues with modem passthrough then let me know.

Hope this clears up any confusion, if so please rate.

Regards,

Dave

UCBNOCWAN Tue, 02/12/2008 - 07:38

Hi Dave,

Thanks a ton.

IS there any way to apply codec G-711 A-law on a pots dial-peer? I guessed that it was related to modem passthrough only? Or is there something else?

Thanks & Regards,

Das.

Correct Answer
davetucker Tue, 02/12/2008 - 08:01

Hi Das,

Don't mention it.

There is no way of applying a codec to a pots dial-peer as you are dealing with devices from the Analog/Digital Telephony era where codecs are not used (although ISDN uses PCM which similar to G.711). You only need to specify codecs in communication between to VoIP devices i.e. Router to Router.

Regards,

Dave

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