Wayne, Configuration on SIP UA box? I am curious about what are typical configuration which can provide HA?
--- [EMAIL PROTECTED] wrote: > Baniel, > SIP HA is available - it may just take some > configuration. I know > / have worked on systems that provide in dialog > failover. The posting from > Jason(?) below stating that the address is not used, > from and to tags are > used to correlate messages with existing dialogs, is > appropriate. > Regards, > Wayne. > ********************************************* > > > > Well we can get into a long conceptual discussion > here... In my opinion > SIP does provide some nice recoverability/HA > built-in support, by having > state/path info incorporated in the messages (e.g > Route list, Contact > etc). > > -uri > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On > Behalf Of Suheel > Hussain > Sent: Thursday, November 18, 2004 10:43 AM > To: [EMAIL PROTECTED] > Subject: RE: [Sip-implementors] UA IP address change > after initial > > > The gist is that Sip signalling does not support > high-availability. Which > is quite odd as a number of telephony and ATM > signalling protocols support > HA. > > -suheel > Suheel Hussain > Email: [EMAIL PROTECTED] > > >For call control, if contact has IP, subsequent > msgs > within dialog will > >use that IP. I would think msgs will be dropped if > failover occurs to > >diff IP. > > >Same with audio stream sent to specific IP/port. > >-- Jason > > >>UA1 is not supposed to maintain IP address as part > of the dialogue. In may cases it wouldn't even know > what is the IP address of the b2bua as the SIP > messages may go through intermediate hops (e.g. > proxy). All > >>should be fine as long as the call-leg (dialog) > identifiers are kept the > >>same (call-id, local and remote tags (in the From > and To headers > >>respectively)). > > >Hope everyone is in agreement w/ me... > > >-uri > > __________________________________________________ > Do You Yahoo!? > Tired of spam? Yahoo! Mail has the best spam > protection around > http://mail.yahoo.com > _______________________________________________ > Sip-implementors mailing list > [EMAIL PROTECTED] > http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors > _______________________________________________ > Sip-implementors mailing list > [EMAIL PROTECTED] > http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors > > Wayne Davies > System Support Engineer - Broadsoft > > Office: +61 3 96260468 > Mobile: 0417282909 > email: [EMAIL PROTECTED] > > ****************************************************************************** > - NOTICE FROM DIMENSION DATA AUSTRALIA > This message is confidential, and may contain > proprietary or legally privileged information. If > you have received this email in error, please notify > the sender and delete it immediately. > > Internet communications are not secure. You should > scan this message and any attachments for viruses. > Under no circumstances do we accept liability for > any loss or damage which may result from your > receipt of this message or any attachments. > ****************************************************************************** > > __________________________________ Do you Yahoo!? Meet the all-new My Yahoo! - Try it today! http://my.yahoo.com _______________________________________________ Sip-implementors mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
