Block calls from spoofed Caller ID?

[Lundah]

I've got a user going crazy getting calls every 2-3 minutes from callers that are spoofing/sending bogus Caller ID.

Calls come in to PRI's via NSU on an SX-2000, which is then trunked over MSDN E1's to a 3300 networked cluster. Telco is no help, they claim since the calls are coming in on a DID PRI, they can't trace it. Anyone know any way I can deal with this, besides the obvious option of changing the user's DN?

 

[slapin]

Sounds like BS. Telco can trace each and every call coming into their network. At least they have billing records. In similar situation we captured SMDR and called police. And they requested telco to trace those calls.

 

[kwbMitel]

There are applications that can route the call (or block) based on CLID but they're very unlikely to be effective in your case. If the call is intentionally fraudulent, then the caller will simply change the caller ID or even randomly generate.

Like Slapin suggests, the Telco can trace the call if properly motivated. It may require dollars or court action but it can be done.

I suggest you route the DN to a mailbox that instructs callers to dial a digit to proceed to the user. The greeting can explain the circumstances and the "Spoofer" is usually a machine that doesn't understand.

good luck

*******************************************************
Occam's Razor - All things being equal, the simplest solution is the right one.

 

[Lundah]

I don't know how automatic it is, since there's someone on the other end who asks for the user by name, then the call gets disconnected. 2-3 minutes later, the same thing repeats, but showing a different CID (there's 3-4 in the rotation, "00000000000", "00000123456" and a disconnected number in the 773 area code). The 2K's are also networked to an Avaya Definity G3, I'm checking if we can do anything on that switch if I route the calls to this DN through the Avaya first, they may have some ACD trickery they can use on it or something.