[SIPForum-discussion] CLIP in SIP

[Neeraj Kumar Gupta]

Hi ,

SIP client extract CLIP from FROM header not from PAI. PAI contain calling
line number.
PAI is mandatory header in IMS network.

PAI and FROM header will have same value when Calling Line have same
presentation Number, If calling line like to have different presentation
number then PAI value will be Calling number and FROM will be presentation
number.
  Business Case :- When subscriber having multiple terminal but like to
present his main number when calling to any one.

When call is going to untrusted network then PAI header will be removed

Privacy:-  In IMS privacy header have two value privacy: id,user that means
CLIR for privacy on ID and user both in this case

             FROM header will be like
"anonymous"<anonymous at anonmyous.invalid.com>
<anonymous at anonmyous.invalid.com%3E>

Please let me know if you have any doubt.
Thanks,
Neeraj

On Tue, Aug 3, 2010 at 11:04 PM, Anthony Orlando <avorlando at yahoo.com>wrote:

>  Folks
>   PAI should not be passed to an untrusted entity.
>
>
> On Aug 2, 2010, at 21:22, ridhuan yusof <mridhuan at gmail.com> wrote:
>
>    Ok if let say in IMS network, SIP client will extract the CLIP from PAI
> . How about the privacy header? Is it compulsory in IMS?
>
> On Mon, Aug 2, 2010 at 6:59 PM, Vivek Talwar <vivek.talwar at aricent.com>wrote:
>
>>  Hi,
>>
>>
>>
>> Generally CLIP information in SIP is extracted from both “PAI” and “From”
>> header.
>>
>> In IMS network, this information is extracted from PAI and if no PAI is
>> present same information can be retrieved from “From” header.
>>
>> In Normal VoIP network, this information is extracted from “From” header.
>>
>>
>>
>> Thanks and Regards,
>>
>> Vivek Talwar
>>
>>
>>
>>
>>  ------------------------------
>>
>> *From:* discussion-bounces at sipforum.org [mailto:
>> discussion-bounces at sipforum.org] *On Behalf Of *ridhuan yusof
>>
>> *Sent:* Friday, July 30, 2010 9:55 PM
>> *To:* discussion at sipforum.org
>> *Subject:* [SIPForum-discussion] CLIP in SIP
>>
>>
>>
>> Hi all,
>>
>> How does the SIP phone read the CLIP information? From "P-Asserted
>> Identity" or "From" header?
>>
>> ------------------------------
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>
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