Hi there, Most probably the indicated length of the "call-id" is rather an imposed limitation of the concerned manufacturer for its product - IBM's Websphere and Microsofts MS-Turn, quote "This protocol is a proprietary extension to the Traversal Using Relay NAT (TURN) <http://msdn.microsoft.com/en-us/library/dd946576%28v=office.12%29.aspx#gt_bfa19fd2-7638-4d46-adcc-07fb32c94441> protocol, as described in [MS-TURN] <http://msdn.microsoft.com/en-us/library/cc431507%28v=office.12%29.aspx>" unquote.
The page even**mentions "****the length of *SIP Dialog ID* MUST NOT exceed 256 bytes". As far as I understood, To: tag, From: tag and Call-id form the "dialog" and if the Call-id would be 256 bytes long, that would make a very short To and From tag... cheers, Jan On 18/07/2013 14:01, ikuzar RABE wrote: > Hi all, > > I found with the link below (IBM) that Call-id max length is 256 > characters: > http://pic.dhe.ibm.com/infocenter/wvraix/v6r1m0/index.jsp?topic=%2Fcom.ibm.wvraix.voip.doc%2Fsiptags.html > Microsoft said the same: > http://msdn.microsoft.com/en-us/library/ff595864%28v=office.12%29.aspx. > > 1) Why don't we have this info in RFC 3261 ? What does RFC says about max > Call-id length ? > I also found here ( > https://lists.cs.columbia.edu/pipermail/sip-implementors/2003-December/005777.html) > that Call-Id is not bounded... > > 2) What about it actually ? > Today I put my call-id max length to 256 characters but I am not sure if it > is correct ... > > 3) What about Call-id min length ? > > Thanks for your help > _______________________________________________ > Sip-implementors mailing list > Sip-implementors@lists.cs.columbia.edu > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
