VoIP Mailing List Archives

[asterisk-biz at ics-il...]

Is the CID of a call to a toll free number really the ANI, therefore not spoofed or blocked?

Someone who's opinion I respect said it generally is, but he wasn't sure. Since I have a potential customer coming to me with an ANI requirement, not a CID requirement, I figured I should make sure.


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Mike Hammett
Intelligent Computing Solutions
http://www.ics-il.com

[jsignorello at ispbx.com]

http://www.totse.com/en/phreak/introduction_to_telecommunications/cid_ani.html



Mike Hammett wrote:

[stotaro at totarotechn...]

ANI and caller ID are different. On a toll free circuit, you are
provided with true ANI due to billing. Caller ID can be changed,
whereas rates (ANI) can not be changed. ANI provides the true
caller's number for billing as well as ANI cannot be blocked as
opposed to CallerID.

Thanks,
Steve Totaro

On Fri, May 9, 2008 at 9:40 AM, John Signorello <jsignorello@ispbx.com> wrote:

[nigel.dennis at sympat...]

Mike... The reason why collection services, skip tracers and private investigators ask to call back on their 800 toll free is simply because you can not spood your ANI to a 800 #.

[asterisk-biz at ics-il...]

That page seems to reinforce the idea that toll free numbers receive the ANI, but when I did a test call to my own toll free, I was able to block my CID from showing up. Therefore it either isn't being delivered or is being delivered in a form I don't know how to access. Can Asterisk access the ANI separate from CNID?


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Mike Hammett
Intelligent Computing Solutions
http://www.ics-il.com

[stotaro at totarotechn...]

I may be wrong here but I do not believe that ANI can be spoofed.

http://en.wikipedia.org/wiki/Automatic_number_identification

Thanks,
Steve Totaro

On Fri, May 9, 2008 at 10:03 AM, <nigel.dennis@sympatico.ca> wrote:

[stotaro at totarotechn...]

Asterisk can take ANI, it took me a while to figure it out but it can.

Thanks,
Steve Totaro

On Fri, May 9, 2008 at 10:11 AM, Mike Hammett <asterisk-biz@ics-il.net> wrote:

[asterisk-biz at ics-il...]

Only via zaptel or can a VoIP interface do it as well?


----------
Mike Hammett
Intelligent Computing Solutions
http://www.ics-il.com


----- Original Message -----
From: "Steve Totaro" <stotaro@totarotechnologies.com>
To: "Commercial and Business-Oriented Asterisk Discussion"
<asterisk-biz@lists.digium.com>
Sent: Friday, May 09, 2008 9:36 AM
Subject: Re: [asterisk-biz] ANI

[stotaro at totarotechn...]

My experience is limited to T1s and T2s broken out into 28 PRIs so I
cannot say for sure. I think the whole idea was accurately bill for
toll free numbers. I am not of the offerings if you don't have a LD
circuit.

Thanks,
Steve T

On Fri, May 9, 2008 at 10:52 AM, Mike Hammett <asterisk-biz@ics-il.net> wrote:

[stotaro at totarotechn...]

Correction, T3 not T2.

On Fri, May 9, 2008 at 10:59 AM, Steve Totaro
<stotaro@totarotechnologies.com> wrote:

[asterisk at wideideas.com]

This belief is limited to your experience with PRIs. When you obtain
SIP termination services from ATT, Verizon, or Level 3. They have no
way of verifying what ANI/CID you are sending. It doesn't matter if
you are calling 800s or not, they bill it back to the CID that you
pass (not to say that your carrier won't bill you as well since they
see the calls go through their switches, but they more than likely
won't see the reciprocal billing from the receiving LEC). Want a
proof of concept? Setup an account with a small terminating provider
like Junction networks, send all your calls out with the ANI of your
cell phone. Last step will be to recoil in horror next time you open
your cell phone bill. I'm not saying they can't track you down, or
trace abuse back to you, since everything is logged, but very little
verification happens.

If you are sending thousands of calls per day to a trunk that is
outbound only, from thousands of different parties, you don't have to
delve into to much logic to see the obvious result.

Cheer

Miles

On May 9, 2008, at 7:33 AM, Steve Totaro wrote:

[stotaro at totarotechn...]

Oh, I was speaking of inbound only LD (toll free) PRIs. Maybe I am
way off topic for this thread.

Thanks,
Steve Totaro

On Fri, May 9, 2008 at 11:18 AM, Miles Scruggs <asterisk@wideideas.com> wrote:

[asterisk at wideideas.com]

I don't see how that wouldn't apply since there still exists a calling
party and receiving party, and carrier. Since the question was of
spoofing it wouldn't make much sense to think of spoofing happening on
the receiving end.

You simply have no assurance that the ANI/CID you are receiving is in
fact valid. It is suppose to be but that is as far as you can go.

On May 9, 2008, at 8:30 AM, Steve Totaro wrote:

[stotaro at totarotechn...]

I am fairly sure that ANI cannot be spoofed.

Thanks,
Steve Totaro

On Fri, May 9, 2008 at 11:41 AM, Miles Scruggs <asterisk@wideideas.com> wrote:

[asterisk-biz at ics-il...]

Well, it wasn't really of spoofing, perse, but if the CNID received on a
toll free is the ANI, since toll free gets passed ANI, but from what I can
see it is not.


----------
Mike Hammett
Intelligent Computing Solutions
http://www.ics-il.com


----- Original Message -----
From: "Miles Scruggs" <asterisk@wideideas.com>
To: "Commercial and Business-Oriented Asterisk Discussion"
<asterisk-biz@lists.digium.com>
Sent: Friday, May 09, 2008 10:41 AM
Subject: Re: [asterisk-biz] ANI