g723 support on 3640 with NM-HDV-1E1

Unanswered Question
Nov 27th, 2008


I am trying to create dial-peers to use g723 on 3640 router with NM-HDV-1E1, running 12.2 IP Plus image. But it doesn't seems to support this codec. Have anybodu tried this combination before ?

I have this problem too.
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allan.thomas Fri, 11/28/2008 - 04:33

I have not specifically used this codec with the NM before, but g723 is definately supported.

There are two different NM-HDV-1E1 modules and depending which one you have determines the number of Channels available for High and Medium codec complexity.

Take a look at the following information I found in the document:-



Single-port, 30-channel E1 voice/fax Network Module (supports 30 channels of medium complexity VoCoders: G.729a/b, G.726, G.711 and fax or 12 channels of G.726, G.729, G.723.1, G.728, G.729a/b, G.711 and fax)


Single-port, enhanced 30-channel E1 voice/fax Network Module (supports 30 channels of high and medium complexity VoCoders: G.729a/b, G.726, G.729, G.728, G.723.1, G.711 and fax)

If you require G723, then you will only be able to have 12 Channels, ensure that you have configured the appropriate codec complexity.

Hope this helps.



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