sundance-communications.com/forum Forums TDM Business Telephone Systems Avaya - Lucent Telephones & Systems 840F Error Code

Need help. Not on site. Customer is experencing a problem where when they pick up on a line, there will be no dial tone for about a minute. The line is not in use. The error code that the Magix gives is:
"840F Lost Idle Message Error"
The manual says that this error means:
"The loop start trunk lost an idle message during glare timing."

This is an intermitent problem. They have a merlin magix 2.2 release cke5 processor in Key mode with a 412 card, an 024 card, an 800 card, and 016TR card and Merlin Mail w/ 4 port license.
If I move the 2 lines on the 412 card to the 800 card it will not present the problem.

The 412 card has been replaced and it did fix the problem for about 3 months then it came back again. If you restart the system it will temporarly fix the problem.

Avaya TSO says the problem is with far end disconnect and to check with the service provider (ALLTEL) to ensure they are sending COD. They say they are and we verified it with some testing and a toner.

Has anyone else had this problem?

Thanks for the help.

I have 2 customers with the same trouble. In both cases the lines come off a T-1 via a channel bank, which we initially thought was the problem. I think it's an engineering problem with the module.

I work with pdwoosley.
And this problem turned out to be the far end disconnect timing from the service provider.

Is there a parameter I can give the telco provider for the timing that these modules will accept - all other line modules do not have this problem. Isn't the standard 450ms for disconnect?

Yes as far as I know it is. But the big problem we had was finding a provider tech that even knew what we where talking about.

Different providers call it different names.

Far end disconnect
Cutoff on disconnect
Called party control
Disconnect supervision