Transcoder registration consideration

[michael-luo]

Call flow is as below:

IP Phone -> CUCM -> GK-controlled Trunk(WAN) -> CME -> CUE voicemail pilot

Requirements:
1) CUE only accept G.711
2) To save bandwidth, we want G.729 over the WAN

Solution:
Configure transcoder on CME to translate between G.729 and G.711.

Questions:
From the test, I found out that I can register the transcoder to either  CUCM or CME.  Which one is a better solution in real life scenario?  And  why?

Thanks!
Michael

[pmvillarama]

Hi,

If you have (G711 only) applications integrated in CUCM that needs to be accessed by remote phones , you should also add Transcoder in it. From your call flow, registering the transcoder in CME is correct since the CUE resides in it. Point is, resources should be locally configured to avoid excessive traffic over the wan.

[VoIP-Tech]

True, like Paul said, resource should be close to the source.