phantom calls with PRI circuits

[rotemshein]

hey fellows, have anyone came across strange phantom calls issues involving PRI switches.

issue reported: several times per day all phones in the office will start ring repeatedly and caller ID will present something like 5 or 555 string

true that it sounds like a pure PBX issue but i am getting more examples from different PBX brands in different geo locations

any thoughts ?

thanks

[rotem.shein]

Issue resolved and related to security cause

Sent from Cisco Technical Support iPad App

[ga_bennett]

Hi Rotem,

What was the security cause?  We just had the same issue in our office.  All lines and all phones rang from an external number 973-829-0000.

Greg