[asterisk-dev] Asterisk does not hangup a channel after endpoint hangs up

[tsengeljab tsogoo]

hello

i have installed the AsteriskNOW 1.7 with GUI (FreePBX) and using 
TDM24XX card. inside sip extentions is ok, but dahdi not detect the 
hangup,  example, anyone dial to dahdi than starting the ring-group when endpoint hangs up but not detect the hangup, ringing until ring-group end. how to 
fix it? what is problem it? i think ,
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