[SIPForum-discussion] contact field in register

[KUMAR SAROJ NAYAK]

Hi Raghul ,
 
could u plz tel the diff betwn (q=0.9 and q=0.1)
 
please clarify with example...
 
thanks in advance.
 

Thanks & regards,

Saroj Kumar Nayak || IMS APPLICATION|| Alcatel-Lucent 

Alcatel Devlopment INDIA, Block A&B ,Plot no 25

Sector 18 ,Electronic City ,GURGOAN 122015

Office:  0112 44654000  | Extn: 4821

Email: saroj_nayak.kumar at alcatel-lucent.com

www.alcatel-lucent.com <http://www.alcatel-lucent.com/> 
 

________________________________

From: discussion-bounces at sipforum.org
[mailto:discussion-bounces at sipforum.org] On Behalf Of Ian Carpenter
Sent: Monday, June 23, 2008 8:27 AM
To: raghul82 at yahoo.co.uk; discussion at sipforum.org
Subject: Re: [SIPForum-discussion] contact field in register



Hi Raghul,

 

In the case of having multiple Contacts, the "q" value denotes the
priority of each particular Contact.  

See RFC3261 section 10.2.1.2: Preferences among Contact Addresses

 

   If more than one Contact is sent in a REGISTER request, the

   registering UA intends to associate all of the URIs in these Contact

   header field values with the address-of-record present in the To

   field.  This list can be prioritized with the "q" parameter in the

   Contact header field.  The "q" parameter indicates a relative

   preference for the particular Contact header field value compared to

   other bindings for this address-of-record.  Section 16.6 describes

   how a proxy server uses this preference indication.

 

 

Ian

----------------------------------------------------------------------
Ian Carpenter / Valid8.com, Inc. - Conform, Perform & Excel(tm)
500 W Cummings Park, Suite #2700, Woburn, MA 01801, USA
i.carpenter at valid8.com / Tel:+1-781-938-0025 / Mob:+1-415-572-7919
http://www.valid8.com <http://www.valid8.com/> 

 

From: discussion-bounces at sipforum.org
[mailto:discussion-bounces at sipforum.org] On Behalf Of Raghul Prasanna
Sent: Saturday, June 21, 2008 5:40 AM
To: discussion at sipforum.org
Subject: [SIPForum-discussion] contact field in register

 

Hi All,

 

  In register message I have seen contact fields having parameters like

 

contact:sip:aaa at jkhjhj.com

action=proxy;q=0.9

 

contact:mailto:aaa at jkhjhj.com

q=0.1

 

   what do these parameters mean? Can anyone explain?

 

Thanks,

Raghul

 

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