Co Trunk

[iriestar]

We have had a co trunk setup for over a year. On Monday we started to have problems. We have to dial a number 2 or 3 times before it connects. When it does not connect we get dead air.

The only major change we have made recently to the G3v6i is enabling outbound caller ID on our ISDN Trunk.

Any Idea why this is happening.

Thanks a Mil
Irie

 

[Bobg1]

By co trunk I would assume you mean a ground or loop start circuit.
Now assuming you have made no changes to the setup for that trunk, the most likely problem would be outside your facility, another words the telco company. The best thing to do would be to test it at the demark point and see if you can place calls on it with it disconnected from the switch.

 

[Rainman10]

odds are you have a dead co line in your trunk group. The dial tone you're hearing is emulated by the definity to make us humans happy. The definity doesn't outpulse the digits until enough to complete a call have been entered.

Usually you can status each trunk group 1 at a time to find the "out-of-service" culprit. Sometimes, however, you do need to test at the dmark and or the switch field (with the pbx removed) to isolate the problem inside or outside.