CME strange !

[Jonn cos]

Hi all experts.

I have a very simply topology,

IPC-1--------------------------R1----------------------------------------------R2----------------------------------IPC-2

          SCCP (g711)                 default dial peer voip                         SCCP(g711)

                                                    (codec=g729)

(IPC stands for IP communicator)

When i make the call from IPC-1 to IPC-2, the call is successful !! why ? i am testing this on dynamips and as per my knowledge R1 has to transcode from G711 to g729 so the call should fail (since dynamips doesnt use DSPs),

I am really missing something big here. Pls guide me pls

[paolo bevilacqua]

Phones also support g.729, so check with which codec the call is established.

[Jonn cos]

Dear Sir,

I cant paste the results here, since i built this scenario at my home. But i checked yesterday and the codec was g729. So are you saying that transcoding is not required because phones also support g729 ?

[Rob Huffman]

Hi John,

Paolo is most correct (+5"P")

Here is an example for IPC;

Network Features

Cisco IP Communicator includes the following network features:

● G.722 wideband, G.711a, G.711ų, iLBC, G.729a, and G.729ab audio codecs

http://www.singlepointoc.com/products/cisco/docs_voice/data_sheet_c78-505261.pdf

Cheers!

Rob