MGCP and G726R16

[jristo]

We have a requirement to run specific application over our voice infrastructure using the G726r16 codec. We have attempted running this at G729 but it doesn't work, and the BW used at G711 is too much. G726R16 seems to be the lowest we can take things too and still have it work.

Is there a way to have the router controlled by the call manager using MGCP but still allow us to either bypass the CM to use the codec we need or somehow have the CM use that codec?

The phones needing G726r16 are stationary numbers off of FXS ports. We currently have this working fine with H323 (bypassed the CM when we have an inbound to those numbers) but we wanted to move to MGCP if at all possible.

[vmoopeung]

Yes you can implement routers controlled by call manger using MGCP. For more details refer the document below

http://www.cisco.com/en/US/products/sw/iosswrel/ps1839/products_feature_guide09186a00800b65dd.html#1376217

[jristo]

I understand and know that rotuers can be controlled by the CM, but our problem still remains.

The CCM doesn't understand or know about G726R16 as a codec. Our specific requirements are to use that codec for one FXS port.

with MGCP, as a master/slave protocol, everything would need to be controlled by the CCM. But the CCM doesn't know anything about this codec.

Hence our delema. We need to bypass the CCM for this one type of call, but would like to have the centralized control of MGCP.

Is there a way to do this with MGCP, or should we just continue to use H323.

Thanks