[asterisk-users] PRI TBCT - Practical Experience, Anybody?

Jay R. Ashworth jra at baylink.com
Mon Sep 8 11:06:26 CDT 2008


On Fri, Aug 15, 2008 at 03:03:23PM -0500, Matthew Fredrickson wrote:
> Let me clarify some of this.
> 
> Under no circumstances can Asterisk receive a TBCT request.  We just 
> ignore them.  We can initiate them however.
> 
> There are different TBCT implementations, dependent on which switch type 
> is used, with different restrictions associated with each switch type 
> selected.
> 
> For true TBCT (on switchtypes of NI2 and 5ESS, AFAIK), you can have any 
> combination of inbound and/or outbound channels (one inbound/one 
> outbound, two inbound, two outbound) and transfer them to the upstream 
> switch.  The protocol doesn't care.
> 
> For DMS100's version of TBCT, called RLT, one leg *must* be inbound and 
> the other *must* be outbound.  No other combination is going to work. 
> This is explicitly mentioned in the protocol in RLT.

Ok.

Just found this in my archive.

Matt: should I assume that this implies that if my switch is provisioned
for NI2, and my Asterisk is set to DMS, that things aren't going to work
well at all?  :-)  (Outbound calls, FWIW, seem to work fine like that...)

Cheers,
-- jra
-- 
Jay R. Ashworth                   Baylink                      jra at baylink.com
Designer                     The Things I Think                       RFC 2100
Ashworth & Associates     http://baylink.pitas.com                     '87 e24
St Petersburg FL USA      http://photo.imageinc.us             +1 727 647 1274

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