[SIPForum-discussion] What are heart beat messages in VOIP viaSIPcalls? What is the standard? T

[sreekant nair]

Thanks for the info Tim. 

Here is a very interesting excerpt from the draft - 

Sec 3.5.2
....
 Note:  The STUN mechanism is very robust and allows the detection
      of a changed IP address and port.  Many other options were
      considered, but the SIP Working Group selected the STUN-based
      approach.  Approaches using SIP requests were abandoned because
      many believed that good performance and full backwards
      compatibility using this method were mutually exclusive.Hope that helps the person who started this thread. 

Cheers
Sreekant


----- Original Message ----
From: "Tim.Wong at cox.com" <Tim.Wong at cox.com>
To: sreekant_nair at yahoo.com; sakcahalit at hotmail.com; amit.keswani at genband.com; yuantao.zhang at ericsson.com; discussion at sipforum.org
Sent: Monday, June 9, 2008 8:44:43 AM
Subject: RE: [SIPForum-discussion] What are heart beat messages in VOIP viaSIPcalls? What is the standard? T

 
Hi Sreekant,
There are actually two drafts that are related to SIP 
heartbeat or keep-alive messages. The main draft is: 
draft-ietf-sip-outbound-14 and the other is: draft-holmberg-sip-keep-00. 
 
-Tim
 
 


________________________________
 From: discussion-bounces at sipforum.org 
[mailto:discussion-bounces at sipforum.org] On Behalf Of sreekant 
nair
Sent: Thursday, June 05, 2008 2:22 PM
To: Halit Sakca; 
Amit Keswani; Yuantao Zhang; discussion at sipforum.org
Subject: Re: 
[SIPForum-discussion] What are heart beat messages in VOIP viaSIPcalls? What is 
the standard? T


Hi,

Some 
time back read that there was a draft being prepared to have a Request message 
called PING to do exactly this. Not sure if the draft/rfc is released yet. Could 
not find it on Google. 
Maybe this cam help, but until then - I guess the 
preferred choice is the OPTIONS message. 

Thanks
Sreekant Nair


----- 
Original Message ----
From: Halit Sakca <sakcahalit at hotmail.com>
To: 
Amit Keswani <amit.keswani at genband.com>; Yuantao Zhang 
<yuantao.zhang at ericsson.com>; discussion at sipforum.org
Sent: Thursday, 
June 5, 2008 8:54:13 AM
Subject: Re: [SIPForum-discussion] What are heart 
beat messages in VOIP via SIPcalls? What is the standard? T

 Hi,
 
Yes heartbeat messages in SIP commonly 
used as OPTIONS and we need to get back 200 OK in a period, if thre is a 
timeout to get 200 OK then we can assume that sip element is out of 
servise.
 
By the way in TCP it is periodic ARP 
messages.

Selamlar,
Halit 
Sakca





________________________________
 From: amit.keswani at genband.com
To: yuantao.zhang at ericsson.com;  discussion at sipforum.org
Date: Thu, 22 May 2008 12:47:37 +0530
Subject:  Re: [SIPForum-discussion] What are heart beat messages in VOIP via SIPcalls?  What is the standard? Thanks

 
Hi,
 
    I  guess heartbeat messages in generic term are used to check the connectivity  between 
two elements and  mostly it is send in OPTIONS. Like to check the connectivity of media server  from
UAC.
 
 
Regards,
Amit  Keswani
SMTS - System  Test

GENBAND  Technologies
C-42, Sector-58
Noida-201303,  INDIA
office             +91.120.2588272
mobile          +91.9891928745
facsimile      +91.120.2588274
amit.keswani at genband.com
 

________________________________
 
From:discussion-bounces at sipforum.org [mailto:discussion-bounces at sipforum.org] On Behalf Of Yuantao  Zhang
Sent: Thursday, May 22,  2008 11:29 AM
To: discussion at sipforum.org
Subject: [SIPForum-discussion] What are  heart beat messages in VOIP via SIPcalls? What is the standard?  Thanks
 What are heart beat messages  in VOIP  via SIP  calls? What is the  standard? Thanks

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