Running Callmanager Express 3.3 on 2800 hardware. When calling between sites, using 7960 handsets, quality of call is perfect, using 7912G to 7960, very poor quality. I have read that the 7912G defaults to G.711 codec unless you enable g.729. Can anyone confirm this, and if thats right, how do you change it (profile ? webpage ?)
Sorry, perhaps I didnt make it very clear. The problems are between 2 CME system, over a wide area link. I assumed that selecting the codec in the dial-peer statement was enough to ensure that g729 was used, but I dont think it is - hence the quality problems.
This may seem strange to ask, but we ran into it once. Are your user's network ports nailed-up to a specific speed and duplex?
The 7912G is not able to be hard set to a speed or duplex - auto is the only option. The 7940/60G is able to be set and, as a result, reduced the duplex mismatches we were getting in our environment. Call quality improved, too.
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