[asterisk-biz] Calls Hang up after 1 min 14 sec : SIP INTERCONNECT

[nigel.dennis at sympatico.ca]

Hi Members,
                   I am setting up termination from another Sip provider 
through my Asterisk box from 1 customer and find a few snags in the set up.I 
have the configuration set up where I can control the billing through 
A2billing.For the SIP config that I give to the customer I include the 
Username:xxxxxxxxx Password :xxxxxxxxxx Codec G711(ulaw) Protocol:Sip, Sip 
gateway: xx.xxx.xxx.xxx Dial Plan:164NXXXXXX Dtmfmode :rfc2833.

The user name and password is generated by A2billing, so now I can setup a 
rate card and add funds to the customer's account.This part works fine, but 
after 1 minute and 14 seconds the call that the customer places through my 
server hangs up and plays a "bye" message. On the other hand when I place a 
direct call through this trunk from my server it works fine. What am I doing 
wrong for the interconnection ?.

Yours Truly,

Nigel Dennis