Problem with lines being busied out

[Tripoth]

Partner ACS 7.0. Partner messaging 6.0

Lines are going busy and remaining that way until a reboot of the system.
It is not always the same line and it is sporadic.

I have had the local carrier over to verify the voltage on the lines and have placed added CO protection on the system.

My thought was that maybe someone from the client's business is picking up a phone(which grabs an outside line), then just presses a button on the phone(station button, paging, etc.) without first pressing the intercom button. This would busy out the line on that phone. Simple way to find out would be to look at all the phones at location when this occurs and find the one that has a green light on that line. Client says this is not the case.

Does anyone have any other troubleshooting ideas?

 

[budbyrd]

Usually I put DSS buttons for all stations on a test set and see if any of the the exts are off hook. Sometimes it is a shorted cable for a jack with nothing plugged in. Or when it is happening take a set to the ACS and start unplugging phones til it goes out. If they are acceidently putting it on hold it would be flashing versus steady.

Dermis and feline can be divorced by manifold methods.*
*(Disclaimer for all advise given)--'Version Dependent'

 

[wireboy]

are you allowing remote call forward or trunk to trunk transfer? any station to trunk loop around connections?

42

 

[WikiTech]

I would ground the processor
any flukey issues cam be resolved by a good ground.

 

[TouchToneTommy]

My thought was that maybe someone from the client's business is picking up a phone(which grabs an outside line), then just presses a button on the phone(station button, paging, etc.) without first pressing the intercom button. This would busy out the line on that phone

I had a local carrier that used the typical Adtran TA series IAD's to deliver dial tone. Reliable disconnect worked properly when an actual call was dropped from the far end, the call disconnected from the Partner. However, if you went off hook and put a line on hold, it would stay that way indefinitely. Solution for this user was to make the phone select Intercom first, and force them to grab an outside line or start dialing 9.