[VoIP] T1 related Problem

[Kirt Stanfield]

An interesting new wrinkle-

As some of you folks know I intsalled a T1 between my Asterisk box and 
my step switch a little over a month ago. This has been working fine, 
and in particular solved some bad echo problems I had been experiencing 
with the Digium card.

Just to confirm:

I can call out from my step switch over my ground start trunk just fine 
(uses T1 FXS).
CNET folks can call into  my switch just fine (uses T1 FXO).
I can call between my SIP phone and the step switch in both directions 
with no problems.

Last night i tried dialing 9 (goes out on T1 FXS)on my switch and 
calling back into it via the T1 FXO card on my T1. I heard some funny 
pulsing (like the first pulse was showing up somewhere in the middle of 
the 7, then a 1) from the switch room and then nothing. I examined the 
asterisk logs and saw the following:

-- Goto (internal,571,1)
-- Executing Macro("Zap/25-1", "dialswitch|571") in new stack
-- Executing Dial("Zap/25-1", "ZAP/45/571|360") in new stack -- Called 
45/571
-- Zap/45-1 answered Zap/25-1
-- Attempting native bridge of Zap/25-1 and Zap/45-1

The first few lines are what I have always seen go out to the switch, It 
is the last line that is new. I would guess that asterisk is trying to 
take advantage of some feature of the T1 card and this is screwing up 
the outpulsing.

Anyone have any ideas? Can I disable the 'native bridge' feature?

Kirt Stanfield