telecom, SIP and TAPI

comp.dcom.telecom - Telecommunications digest. (Moderated)


telecom >> SIP and TAPI

by JustSomeGuy » Mon, 02 Aug 2004 01:04:18 GMT

I'm sorta new to the VoIP standards.

I see there is SIP and H.323. As I understood it H.323 was a video
teleconfrencing standard. Reading more I see that it can also be used
to do an IP to PSTN session. I have found Microsofts TAPI 3.0 and I
am wondering if I need to study SIP in detail as well or is TAPI
sufficient?

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telecom >> SIP and TAPI

by T. Sean Weintz » Thu, 05 Aug 2004 05:18:02 GMT



It depends on what you want to do. If you are only going to be working
in the Micro$oft Windoze world, TAPI may suffuce for a lot of
things. But TAPI is not a protocol, it's an API. If you are looking to
write VOIP software, TAPI won't do it for you. You need to decide
whether your VOIP will use SIP or H.323, and learn one of those. MOST
emerging VOIP applications seem to be using SIP, but there are
exceptions. The Inter-tel PBX VOIP phone sitting on my desk right now,
for instance, uses H.323. More recent versions of the same phone,
however, offer a choice between h.323 and SIP.
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