Re: Theoretical Question - Session BorderController

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Thank you Gang for your input here.  According to the Wikipedia page on B2BUA:
 
The Back-to-Back User Agent (B2BUA) acts as a user agent to both ends of a Session Initiation Protocol (SIP) call. The B2BUA is responsible for handling all SIP signalling between both ends of the call, from call establishment to termination. Each call is tracked from beginning to end, allowing the operators of the B2BUA to offer value-added features to the call.
 
and,
 
A Signaling gateway, part of a Session Border Controller, or Asterisk PBX are good examples of a B2BUA.
 
The last statement particularly puts me off, as the SBC page on Wikipedia also suggests that "Signalling Mode" GnuGKs also function as a partial SBC.  Is this correct?  Or am I missing something?
 
Regards
HASSAN
 
 
 
----- Original Message -----
From: Gang Liu
Sent: Monday, December 29, 2008 10:14
Subject: Re: Theoretical Question - Session BorderController

I don't think gnugk is a SBC. For example, can one peer in normal start mode and the other call leg in fast start? mostly, SBC is a B2BUA.

regards,
Gang

On Sun, Dec 28, 2008 at 10:39 PM, Nyamul Hassan <mnhassan@xxxxxxx> wrote:
Hi,

I have a theoretical question about the difference between a Session Border
Controller and a Soft Switch.  Going through some googled documents, it
appears there is very little difference between the two.  It appear GnuGK
can work as an SBC for H323 endpoints.  Am I being wrong in making this
assumption?  Can someone shed some light on this issue?

Regards
HASSAN


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