[VoiceOps] Carrier choices

[anorexicpoodle]

Usually a 4xx class message is what the audible code would map to
however since all their term is in-network and bypassing them and
sending the call elsewhere yields no such problem it would seem to
indicate they are the ones screwing the pooch on those instances. Like I
said however these instances aren't all that common but can be a pain
when they arise. 

On Fri, 2009-08-28 at 22:30 -0400, Alex Balashov wrote:

> 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.
> 
> 
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