[Asterisk-bsd] Caller ID

[Tim St. Pierre]

I have a virtual PRI coming in over SIP, and I found that sometimes calls 
coming in to a toll-free DID had really strange caller ID numbers.

I opened a ticket with my carrier, and they told me that originating wireless 
carriers usually substitute a bogus caller ID number when calling toll-free.  
I seem to remember hearing something about a scam that used a cellphone to 
falsely authenticate a western union transfer or something like that.

Could that be a possibility?

-Tim

On Tuesday 25 November 2008 14:18, Adam Vande More wrote:
> Okay this really isn't BSD specific question but the digium forums have
> provided no response so maybe someone here can provide some insight.
>
> I'm having an issue with the reported caller id off of a native bride.
> Under certain conditions, call are automatically routed to different
> endpoints. Normal call flow would be:
>
> *asterisk accepts inbound call on PRI
> *asterisk opens new PRI channel and bridges the two.
>
> Normally, the inbound CLI is sent to the endpoint which is the desired
> behavior but one of the endpoints is a toll free number and they are
> reporting the CLI they are receiving is one on the DID's on the trunk. I
> know how to send the correct CLI, however I don't understand why caller
> id sending isn't consistent.
>
> We do a lot of call bridging on our T1.  Normally, when I bridge a call
> using one of our assigned DID's as the inbound number, and different
> terminating numbers.  An example of such a call would be calling (XXX)
> XXX-XXXX  from phone # (YYY) YYY-YYYY would bridge with another channel
> and then dial my cell phone (ZZZ) ZZZ-ZZZZ.  My cell phone receives
> (YYY) YYY-YYYY as the caller id in this scenario as I would expect,
> however there are some calls that bridged in the same manner yet the
> terminating number receives a trunk DID(not defined in *) as the caller
> id.  I don't understand the difference in behavior, and am wondering if
> anyone can explain it.  The terminating number is toll-free where the
> prob is occurring.
>
> Here is the bridging command....as simple as it gets:
>
> *Quote:*
> exten => 1641,1,Set(CDR(userfield)=Identifier)
> exten => 1641,2,Dial(Zap/G0/1877ZZZZZZZ)
> exten => 1641,3,Hangup

-- 
Tim St. Pierre

IP telephony specialist
sip://5101@communicatefreely.net
Toronto: 647 722 6930
Toll-Free 1 877 291 VOIP
tim at communicatefreely.net