[asterisk-users] DAHDI not detecting hangup

[Brian C. Huffman]

I've got an old analog PBX and I'm trying to connect an FXO port on my
asterisk server to one of the extensions on the old PBX.  This should
work as en extension on the old PBX should be providing dialtone,
battery current and ring voltage.

However, when the old PBX "hangs up" asterisk doesn't appear to be
detecting the hangup (the DAHDI channel stays in use).

Can anyone help?

Thanks,
Brian