[Asterisk-Users] External line hangup

[Sascha Ferley]

Hi,

I have discovered something strange with my asterisk box. After having
figured out how to get incoming calls to work on my TDM22B (TDM400P) card,
i am having an issue in that when the outside caller hangs up the phone
before the phone is answered on extention end, the extention rings till
voicemail or till deadline and doesn't detect the hangup.

Is there something i might have missed in the configuration files?

Please let me know where i could look.
thanks
Sascha