RFC 3325:


PAssertedID-value = name-addr / addr-spec



RFC 3261:



name-addr      =  [ display-name ] LAQUOT addr-spec RAQUOT

addr-spec      =  SIP-URI / SIPS-URI / absoluteURI

SIP-URI          =  "sip:" [ userinfo ] hostport

                    uri-parameters [ headers ]



[ userinfo ]  ----> [] means optional



Mustafa Aydın

Verscom Solutions





-----Original Message-----
From: [email protected] 
[mailto:[email protected]] On Behalf Of Mustafa 
AYDIN
Sent: Friday, May 23, 2014 7:55 AM
To: Ozdogru, Kutay; [email protected]
Cc: Caglar ER ([email protected]); [email protected]
Subject: Re: [Sip-implementors] Empty P-Asserted-Identity Header



Hi Kutay,



There is no restriction to send PAI header without the userinfo.



Regards,



Mustafa Aydın

NGN Services

Verscom Solutions



-----Original Message-----

From: 
[email protected]<mailto:[email protected]>
 [mailto:[email protected]] On Behalf Of Ozdogru, 
Kutay

Sent: Thursday, May 22, 2014 5:57 PM

To: 
[email protected]<mailto:[email protected]>

Cc: Caglar ER ([email protected]<mailto:[email protected]>); 
[email protected]<mailto:[email protected]>

Subject: [Sip-implementors] Empty P-Asserted-Identity Header



Hi all,



Our switch is receiving IAM message and mapping it to SIP as below.



IAM:



Calling Number: (empty)





SIP:

P-Asserted-Identity: <sip:xxx.xxx.xxx.xxx>

Privacy: none





After that remote party replies with 603 Decline with the values below:

Reason: Q.850 ;cause=16 ;text="local"





I am wondering, is it possible to send PAI header empty like this? Or it has to 
be at least anonymous ?



Regards,

K

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