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

[Jay R. Ashworth]

On Fri, Aug 15, 2008 at 03:03:23PM -0500, Matthew Fredrickson wrote:
> 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.

Oddly, I learned about TBCT *from the feature planning guide concerning
the DMS100*, to which I had a subscription 10 years or so ago; I don't
recall it having a different name or limitations.

I can lay my hands on that issue; I will.

But, again, I wasn't concerned with whether Asterisk could do anything
specific with TBCT, except catch calls sent to me by someone else
performing one.

Which my original message was pretty clear on.  :-)

Cheers,
-- jra
-- 
Jay R. Ashworth                   Baylink                      jra at baylink.com
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