Voxalot / SIP Broker Support Forums - View Single Post - Codec Selection

pmerrill · 05-11-2006, 09:52 AM

Ok,

So if the list was alaw;g729;g723 and my ATA was set to use alaw, then what would happen if voxalot routed the call to a VSP that only supported g723?

I assume as follows???

SIP protocal used to communicate call to Voxalot. Voxalot attempts to negotiate call with the VSP (after call plan) at alaw (fails), g729 (fails), g723 succeeds. Correct?

When Voxalot receives the call from my ATA, does it know that my ATA is set to g723?

Perhaps someone can give me pointers to a more technical paper on the SIP protocol?

By the way, what is the EXACT list of acceptable codecs that Voxalot accepts?

05-11-2006, 09:52 AM	#4
pmerrill Senior Member Join Date: Apr 2006 Posts: 109 Thanks: 0 Thanked 0 Times in 0 Posts	Ok, So if the list was alaw;g729;g723 and my ATA was set to use alaw, then what would happen if voxalot routed the call to a VSP that only supported g723? I assume as follows??? SIP protocal used to communicate call to Voxalot. Voxalot attempts to negotiate call with the VSP (after call plan) at alaw (fails), g729 (fails), g723 succeeds. Correct? When Voxalot receives the call from my ATA, does it know that my ATA is set to g723? Perhaps someone can give me pointers to a more technical paper on the SIP protocol? By the way, what is the EXACT list of acceptable codecs that Voxalot accepts?