During phone calls, user losses ability to speak to caller.

[BTtech21]

HELP!! Out of options!

I have a single user that has been dropping calls. The issue is with his extention only, until recently. The user will be on a call for a short or long period of time when the caller will randomly loose the ability to hear the user. I have been onsite multiple times and the phone company has as well.

I have replaced the handset, phone, wall jack, phone line running from system to wall jack, changed the extension, replaced the expansion card, and moved the extension from expansion card to main processor.

About a week ago, more user's began having the dropped call issue and the phone company was contacted to come back out. The phone company tech said he "tightened" all the connections he could find. Two days of smooth communication went by before all user's began having the issue again. The problem seems more promenant when callers are calling in with a cell phone, but land lines also loose the ability to hear the Partner user.

I'm all out of options besides replacing the 5-slot carrier. Any ideas will help.

 

[CarGoSki]

So the call still stays up and at least one party can hear the call?
Is the problem localized to one specific trunk? You should be able to see which trunk has the conversation and the loss of audio.
Perhaps you can replace the line cross connects from dmarc to the line ports on the partner.

 

[BTtech21]

Yes the Partner user is still able to hear the caller. At one point, I sat at the customer site and called my office utilizing all of their lines for a half hour period. I was unable to recreate the issue and localize the issue to a specific trunk, of course. Reports from the user describe that the user can be on any line when the caller loose the ability to hear.

 

[Telecomboy]

I bet it is localized to one trunk especially since you have replaced all equipment. I assume it is probably a key system. I would have them try to keep track of what line they are on so when it happens they know what line it happened on. I have had a similar issue with static growing as a call went on longer until finally it disconnected. ATT kept saying their lines were clean, but they weren't staying on the line long enough for the issue to happen. Once they did, they realized it was their issue and fixed it. The hard part will be figuring out what line this is happening on.

 

[BTtech21]

Thank you for your insight. I'll do my best to track down the affected line.

 

[Dexman]

Try to duplicate the problem using a SLT connected to the demarc. Also have at&t chk any line equipment that might be used.

I "FEATURE 00