[Asterisk-Users] Problem with ZAPHFC: internal S0 hangs when hanging up

[Sven Fischer]

Am Dienstag, 7. Februar 2006 09:38 schrieb Sven Fischer:
> Hello all,
>
> if I try to call from one phone on the internal S0 to another on the same
> S0 using zaphfc, the bus is hung up. The called phone is ringing, but I
> can't talk from one phone to the other. The error I get is:
>
>     -- Executing Dial("Zap/2-1", "ZAP/1/55|15|tr") in new stack
>     -- Requested transfer capability: 0x00 - SPEECH
>     -- Called 1/55
>     -- Channel 0/1, span 1 got hangup, cause 42
>     -- Zap/1-1 is circuit-busy
>     -- Hungup 'Zap/1-1'
>
> The called phone is still ringing, if I have hung up the calling phone. I
> have to restart asterisk to get things going again. Calling from SIP to the
> phones and calling from phones to external ISDN is working fine.

Okay, further investigations show that if I connect just one phone to the 
NTBA, everything seems to work fine. If I plug in the second phone, the 
communication fails. Each phone works if plugged in on it's own into the 
NTBA. Termination in the NTBA should be activated, the switches are on.

Where should I look for errors? Can it be a termination problem if every phone 
works on it's own?

Sven

-- 
Sven Fischer (Dipl.-Phys.) - FACIT Consulting GmbH
  Hausinger Str. 6 - 40764 Langenfeld
  Tel: 02173/16700-55 Fax: 02173/16700-60