Codec question

[phoneguy55]

G3 CM2.0. Currently I have a 2 Clans and 2 Medpros both in the same network region using codec G.711. I have IP phones, softphones, and IP trunks all using these resources. If I add another codec so that the softphone users can use something besides G.711, then what prevents my IP trunk calls from using the other codec? I want IP trunk calls to always be G.711 as I have plently of bandwidth, but some softphone users don't, when connected via VPN.

 

[sjforcum]

it's based on the order you put the codecs in. The first codec the equipment is compatible with, is used.

As long as you leave G.711 as the first option, the local equipment will use it.

When your IP Softphone users login with the DSL bandwidth setting, G.711 is not enabled so the IP Softphone will go down the list ignoring the G.711 in position one and use G.729 in position two.

You could also further control this by setting up a seperate IP Network Region for your IP Softphones and specify a codec set that ONLY uses G.729

 

[kinghway]

You can set another IP-Network region, this region is for the softphones registed via VPN, set the codec to G.729 for communicate with different regions. Add the IP address of softphones to the IP network map, configure these IP address to the region you just set. So, the IP softphones and other phones can work in different network region and IP codec. Otherwise the IP softphone will retrieve the region from the C-LAN it registed.