[Asterisk-Users] call drops after one ring

[Adam Moffett]

I'm trying to make a call through 2 asterisk servers, and the call 
simply hangs up after one ring.
The path is like this:
ATA1 - (SIP) - server1 - (IAX) - server2 - (SIP) - ATA2

The two ATAs are registered to their respective asterisk servers and can 
make and recieve calls to local extensions and call out via IAX to our 
provider.  But for some reason I can't call one from the other.

all I have in IAX.conf in both cases is something like this:

[theOtherServer]
type=friend
context=default
allow=all
host=1.2.3.4
qualify=yes

in extensions.conf on server1 under the default context I have:
exten => 103,1,Dial(IAX2/theOtherServer/${EXTEN})

on server2 I have:
exten => 103,1,Dial(SIP/ATA2)

when I call 103 from ATA1, ATA2 rings exactly one time and the call 
disconnects.  Is there something additional I need to make this work?