[VoiceOps] Carrier choices

Alex Balashov abalashov at evaristesys.com
Fri Aug 28 22:30:07 EDT 2009

anorexicpoodle wrote:
> We use O1 as one of our peers. There is the occasional termination issue 
> where they serve rejection messages in audio without a sip code for us 
> to route advance, on the whole they aren't bad, but nothing really 
> stands out either way.

Are you sure that's them and not a far-end switch?

What kind of rejection is it?  Certain kinds of rejections don't get 
translated to signaling-plane feedback and instead are conveyed via 
in-band audio message, per de facto SIP<->ISUP convention.

Alex Balashov - Principal
Evariste Systems
Web    : http://www.evaristesys.com/
Tel    : (+1) (678) 954-0670
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