I’ve been facing an odd issue with Digium TDM2400 card (12 FXO / 12 FXS).
From time to time a FXO port will not hangup, although the extension and
POTS line already did. It’s like a zombie channel. When this happens we
issue “hangup request DAHDI/x-x”. Anyone faced similar issue?
Current configuration: Ubuntu 10.04 64 bits, Asterisk 188.8.131.52, DAHDI 2.3.0.