[VoiceOps] Caller-ID: SIP From vs. P-Asserted-Identity

[Colin Brown]

The best way is to define and agree with each termination carrier how they will handle it. I'm speaking about mostly sending international traffic and believe  me they all want it different ways. 



On Jul 23, 2012, at 6:21 PM, "Hiers, David" <David.Hiers at adp.com> wrote:

> Perfectly legal under 3325.8; the UAS is free to do whatever it wants to with the PAI info.
> 
> For the PAI to reach the actual endpoint phone is a bit off-putting... It shows a bit more trust in the endpoint than I'm usually willing to extend, but I'm a bit curmudgeonly at times.
> 
> David
> 
> 
> -----Original Message-----
> From: voiceops-bounces at voiceops.org [mailto:voiceops-bounces at voiceops.org] On Behalf Of Jay Hennigan
> Sent: Monday, July 23, 2012 14:08
> To: VoiceOps
> Subject: [VoiceOps] Caller-ID: SIP From vs. P-Asserted-Identity
> 
> Question for the experts:
> 
> We have a scenario where a SIP user originates a call to the PSTN (not
> 9-1-1) with a SIP From: header containing one DID and P-Asserted-Identity showing a different DID.
> 
> We expect the carrier to use the P-Asserted-Identity for billing and recordkeeping but send the SIP From: out as the CLID to be displayed to the called party.
> 
> Typically this is done in a call center type scenario where an agent wants the CLID to display the main number of the agent  pool and not the specific DID of the agent.  Another scenario is a customer PRI-based PBX that hairpins inbound calls back out to a traveling user and wants to preserve the original caller's information.
> 
> One of our terminating carriers uses the P-Asserted-Identity as the displayed CLID and not the SIP From:.  I feel that this is not correct.
> Opinions?
> 
> Numbers have been changed to protect the guilty...
> 
> TO: <sip:8055550123 at www.xxx.yyy.zzz;user=phone>
> 
> FROM: "Fred
> Flintstone"<sip:+18055550199 at www.xxx.yyy.zzz;user=phone>;tag=1689985881-1343063740200-
> P-Asserted-Identity: "Fred
> Flintstone"<sip:+18055550177 at www.xxx.yyy.zzz;user=phone>
> 
> TIME/DATE: Mon Jul 23 17:15:39 2012  (GMT)
> 
> RESULT: Called party (8055550123) is seeing 8055550177 as calling party's caller ID instead of 8055550199
> 
> 
> 
> --
> --
> Jay Hennigan - CCIE #7880 - Network Engineering - jay at impulse.net Impulse Internet Service  -  http://www.impulse.net/ Your local telephone and internet company - 805 884-6323 - WB6RDV _______________________________________________
> VoiceOps mailing list
> VoiceOps at voiceops.org
> https://puck.nether.net/mailman/listinfo/voiceops
> 
> 
> This message and any attachments are intended only for the use of the addressee and may contain information that is privileged and confidential. If the reader of the message is not the intended recipient or an authorized representative of the intended recipient, you are hereby notified that any dissemination of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately by e-mail and delete the message and any attachments from your system.
> 
> _______________________________________________
> VoiceOps mailing list
> VoiceOps at voiceops.org
> https://puck.nether.net/mailman/listinfo/voiceops