Outbound Route Ringing Busy

I have 5 DAHDi lines set up, and my outbound route goes in the following order: 3,4,5,2,1. Around once a week, the route stops working, and if line 3 is in use, phones ring busy when trying to dial out. A reboot always fixes this, but there is obviously a problem. If anyone knows the problem or can point me in the right direction that’d be greatly appreciated.


Do a DAHDI show channels, I am sure you have hung channels.

You did not say what kind of DAHDI hardware, Asterisk, DAHDI and FreePBX revisions or how the system was installed.

You should also never have to reboot a machine. You can release the channels or worst case restart DAHDI and Asterisk.