[asterisk-users] NFAS Not Passing Audio on B-chan 48,72,96

[Steve Totaro]

I have NFAS setup on several quad port T1 cards (Sangoma). 

It mostly works well with the exception that calls coming in on channels 
48,72, and 96 have no audio.  I tried removing these channels from 
zapata.conf with hopes that the channels would not come up or be used.  
Now I get "Ring requested on unconfigured channel". 

How can I busyout these these channels so that incoming calls are not 
sent to them, or how can I fix the real problem?  I think it may be a 
Sangoma/Wanpipe configuration issue.

Thanks,
Steve Totaro