Re: SIP-T and Q.Sig

[Dean Anderson <dean@av8.com>]

Q.Sig is a Q.931 ISDN extension that allows PBX's to signal each other
over PRI's and potentially other Q.931-using things such as h323. Q.Sig
provides the supplementary services to Q.931 ISDN similarly to H.450
services in h323.  PBXes that support Q.Sig should be able to interoperate
supplementary services (eg call transfer, etc)  with PBX's from other
venders.

Are you looking for information on using it (eg end user with multiple
heterogeneous PBXs), developing it (eg PBX vendor, VOIP vendor), deploying
it (eg carrier, etc)?

		--Dean

On Thu, 10 Jun 2004, Daniel Golding wrote:

> 
> Can anyone shed light on the use of these protocols for inter-call server
> signaling? I've heard SIP-T is become prevalent for this, but the RFC seems
> to indicate that it was originally intended for SS7 to VoIP interoperation,
> rather than voip switch to voip switch signaling.
> 
> Thanks,
> 
> 



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