sundance-communications.com/forum Forums TDM Business Telephone Systems NEC Telephones & Systems DSX 160 Station Troubles

Hello,

My Customer's DSX 160 has been rock solid since installed in sept of 2012 with all new hardware. Trunks are 8 POTS lines behind good electronic fuse protection. All wiring is new. System is on a UPS and System is properly grounded.

Lately, the customer claims Line 6 dials line 1, and, some stations will intercom each other by themselves.

They have v-mail to email feature, so I have disconneted the Internet, so to not allow hacking, and, have by-passed the UPS.
There is no sign of water damage at the Unit or stations.

We have re-booted several times. All is quiet after every re-boot for about a day, then the same troubles come back. It may be quiet for several days, then, get several of the above events in the span of a couple of hours, then quiet for a few more days.

I have not replaced any hardware yet, but was thinking of replacing the CPU first. Other than the Power Supply, I have 2 16 port station cards and 2, 8 port trunk cards.

Any thoughts on troubleshooting going forward?
The Customer is keeping a log of dates and events.
They are within 5 miles, which is a plus.

I've checked with all my NEC buddies, but no solid leads yet.
Should I start with the CPU replacement?

Thanks,
Techroy

I would defaut and re prgràm first

Skip, i have backed-up System files recently to my laptop. Can I reload using them? Or are you saying to wipe the system back to default and manually re-program? Thanks, Roy.

Had this on a ds2000,it was CPU.

brokeda,....I'm thinking of replacing the CPU. The System continues to have strange station problems. Now, at times,
calls placed on hold and picked up by another user will hear a call-back or camp-on tone in their ear. The call was not transfered, just placed on hold and picked up by a 2nd inside user. When the 2nd inside user hangs up, he and the 1 st inside user who placed the call on-hold will be connected.
But, this only happens at times. Could high loop current on my 8 pots lines be doing this?