[Asterisk-Users] Answer not detected?

[Joe Antkowiak]

I have this in extensions.conf:

exten => 1,1,Dial,Zap/g9/4439568899/|24
exten => 1,2,VoiceMail(u8004)

and this happens:

    -- Playing 'js-joe-trvm'
    -- Executing Dial("Zap/2-1", "Zap/g9/4439568899/|24") in new stack
    -- Called g9/4439568899/
    -- Zap/1-1 is ringing
    -- Zap/1-1 is ringing
    -- Nobody picked up in 24000 ms
    -- Hungup 'Zap/1-1'
    -- Executing VoiceMail("Zap/2-1", "u8004") in new stack

The problem is, the number dialed did pick up, and the call was connected,
but it seems as if asterisk didn't detect that the call had been answered.
Any ideas whats up?  

The channels are connected via the single port T1 card and an ADIT 600
channel bank with an FXO-8 card.

Any help would be much appreciated.

-Joe