BP250 phones ringing without any number called 1

[VoIP101]

I have a issue on a BP250 systeem, where the phones at night starts to ring.
When somebody answers the call, there is silence.

Can I start a trace on the BP250, so I know know what is calling those phones?
Maybe there is some analog device on the controller that calls a group of phones...

So.. Can you trace on the BP?

Rg,

 

[nerdherder27]

nightmare is calling ...
seriously, it happened to me a similar problem is the cause of sudden ring was due to the installation of the cables together with high voltage cables.
At the bp can trace the isdn trunk but no analog device.
or active Smdr so you can see if someone calls those numbers at night both inside and off the outside

 

[xs650]

is it a hotel system?

 

[VoIP101]

No, not a Hotel system.

 

[teenu3]

is voice mail activated.

 

[SBIDIGUDA]

Have you a cable for CIL??

 

[Munz]

Had a similar problem to this, where Abbrev dial numbers were being called.
What are some of the extension numbers getting the calls? My guess would be extensions numbers with digits that are mostly 1's and 2's. A failing external cable on the property with analogue extensions attached was the culprit. (Pull the analogue boards for one night and see if it stops) It can be H/R connections on lines, faults in pits and joints, or just one dodgy phone going short and open on an analogue card. A short cct line going intermittent open can simply dial ones or twos easily. Change the extension number to 189 or 1899 instead of 111 or 1112 ... and the problem goes away.

Night time drop in temperature will shrink your copper wires and connectors and cause bursts of analogue digits. (Sometimes need a bit of rain to get a short circuit too.) Testing your analogue extensions with a meter might point to the culprit.

I changed the numbering of the speed dials as a temporary measure, so that the "on-call" employee could get some sleep at night until the fault was found. The final result was a failing 50 pair cable that had to be replaced at considerable expense to the customer but it resolved the phantom rings instantly.

Regards, Munz

 

[VoIP101]

The problem was as suggested faulty wiring.
We have unplugged the analog board, and the problem disappeared.

Thanks a lot.