[Asterisk-Users] IAXy and bandwidth requirements

[Michael George]

In the mailing list archives, I found a message that indicates that the 
IAXy has the ulaw, alaw, and g726 codecs, but I cannot find anything 
official on Digium's site about it.  The Installation Manual has an 
example iax.conf file that indicates the ulaw codec, so I know that one 
is good.

But we are thinking about using the IAXy over a VPN, to replace our 
MultiVoip.  alaw and ulaw are 64kbps, which is too much for our tunnel. 
  G726 would be good if is has decent sound quality at 16kbps.  We 
currently use MultiVoip's Netcoder at 9.6kbps which works fine.

So, is there an official statement somewhere about which codecs the 
IAXy supports?

Thanks!
-Michael