[Asterisk-Users] Hangup problem

[Marek Zachara]

i have a box running debian sarge with asterisk installed from distribution 
packages:

CLI> show version
Asterisk 1.0.7-BRIstuffed-0.2.0-RC7k built by kk at nyx on a x86_64 running Linux

I have managed to configure a simple dialplan (the PBX task is quite simple as 
this is a small office with just a few phones)
I have one Zap (PSTN) line connected to it and one SIP to a local provider.

After some googling most things seem to work well, but i'm having problems 
with Hangup. This affects both the Zap interface and the SIP connection to 
the provider.

No matter who tries to hang up an established call, its not properly finished. 
In such case, with the other node just silence is heard (and not 
congestion/busy signal). This includes calls initiated both from outside and 
from inside with a voip phone connected to the asterisk. 

on asterisk console i'm getting these messages:

  == Spawn extension (incoming, s, 2) exited non-zero on 'SIP/1012082-8408'
  == Spawn extension (incoming, h, 1) exited non-zero on 'SIP/1012082-8408'

here is the relevant part of the dialplan:

[ Context 'incoming' created by 'pbx_config' ]
  'h' =>            1. Hangup()                                   [pbx_config]
  's' =>            1. Ringing()                                  [pbx_config]
                    2. Dial(SIP/11|5)                             [pbx_config]
                    3. Dial(SIP/11&SIP/21|20)     [pbx_config]
                    5. Hangup()                                   [pbx_config]
  't' =>            1. Hangup()                                   [pbx_config]

please tell me what i'm doing wrong :)
thanks in advance,
Marek