[standards-jig] VoIP Standard for Jabber

Vapor vapor at 66oc.org
Fri Jan 17 15:29:01 UTC 2003

Yeah, that is what I have been discovering while researching all of this.
Kinda starting from ground zero on it as I dont have a whole lot of
experience with the protocol side of VoIP.   So far SIP or SIP+ seem to be
the forrunner for Voice.  But h.323 offers both voice and video with it.

I am working on compiling a list of pro's and con's to each though to help
me summarize the capabilities of each.  One thing I have noticed is that SIP
deals with End Node communication, not concerning itself with any sort of
central gateway.  I found that this has caused problems in the past,
expecially when it comes to firewalls because inbound connections through a
natted gateway wont translate properly.  I know some gateways/firewalls are
beinging to support SIP but for the end user who may be using something like
a linksys, this may not be an appropriate solution.

Still hunting though.

----- Original Message -----
>From: "Mark Brown" <broonie at sirena.org.uk>
To: <standards-jig at jabber.org>
Sent: Friday, January 17, 2003 7:01 AM
Subject: Re: [standards-jig] VoIP Standard for Jabber

> On Wed, Jan 15, 2003 at 01:22:37PM -0600, Vapor wrote:
> > VoIP Standards out there:
> > H.323 v1, v2, v3, v4
> > SIP (rfc 2543)
> > MGCP (rfc 2705), MGCP(ISC specs)
> > SIP+
> > H.248(Megaco)
> > Others.....
> > According to http://www.bcr.com/voicecon/articles/b0006p64b.asp H.248 is
> > slated to become the most popular in the future and theirfore probably
> > one we should look most seriously at.
> Note that the protocols you list have two very distinct roles.
> Protocols like H.323 and SIP deal with establishing calls: things on the
> level of "I'd like to call number X".  Protocols like MEGACO and MGCP
> deal with low level control of devices ("The user has picked up the
> handset" or "Send an RTP stream to this IP address and port").
> --
> "You grabbed my hand and we fell into it, like a daydream - or a fever."
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