Digium b410p with i4b

[Hans Petter Selasky]

Hi Mikael!

You need to insert a:

exten => n,xxx,Ringing

when you receive the call(s) from ISDN in your dialplan!

Actually Asterisk should do that, so maybe there is a bug in Asterisk. You can 
see on the trace that there is only:

-- TE->NT - unit:08  frame:002265 - time:12.07 18:22:41.132110 - 

CALL_PROCEEDING 

from the TE side, and this state will timeout after 10-20 seconds per ISDN 
specification. That is most likely what happens. The "ringing" state on the 
other hand will timeout after approximately 2 minutes under I4B.

--HPS