[Asterisk-Users] False Hangup detected on Digium TDM400P

[Ruben Fagundo]

I have an asterisk server running on Redhat 8.0 with a Digium TDM400P 
w/4 FXO modules (TDM04P)

There are 2 lines going into the Digium card. One line is a Vonage 
digital line, and the other line is a Comcast voice line. I have a SIP 
Grandstream 100 phone connected to the Asterisk server.

The problem is that on occasionally, after talking for about 20 minutes 
or so, the call gets hung up and I get a fast paced busy signal. The 
caller gets dead air.  I have called Digium wondering if their is a 
hardware problem, but they don't seem to think so. Is  there a way to 
deactivate the other 2 channels, if they aren't being use. Perhaps 
having all 4 channels active is causing the false detects. The problem 
occurs on both lines for incoming calls and it just happened again today 
on an outgoing call after 15 minutes of talk.

I have tried busydetect=no and yes and neither one make a difference. 
suggestions?

/etc/asterisk/zapata.conf
  busydetect=yes
  busycount=10


-- 
Ruben Fagundo
NPV Corporation

Tel: 617-848-0890 x100
Fax: 617-249-1994