Hi Comments inline <Ranjit>
Regards Ranjit -----Original Message----- From: Attila Sipos [mailto:[email protected]] Sent: Tuesday, March 30, 2010 3:00 PM To: Avasarala Ranjit-A20990; [email protected] Subject: RE: [Sip-implementors] what is SIP technology for switching betweennetworks? Thanks for your response >>For a more detailed explanation, could you elaborate your questions as >>to between which networks you want to interwork and what u mean by >>network going down - is it a particular server (master server) going >>down and u want to seamlessly switch to slave (backup server)? No, it's just 2 networks which can go up and down under different conditions. There is nothing special about them. (They could be both wireless but not necessarily) There are just effectively 2 gateways, and each gateway goes to a different network. Each network could be a completely different service provider. SIP UA---------------|-------192.168.0.1 GW1 ROUTER--external IP1--> ISP1 192.168.0.254 |-------192.168.0.2 GW2 ROUTER--external IP2--> ISP2 So for making a call, for example: 1. only GW1 has a connection to ISP 2. route call from SIP UA via GW1 3. call is still up and GW2 now has a link to ISP2 4. call is still up but GW1 loses link 5. (what I want) SIP and RTP continue seamlessly to use GW2 for the call The SIP UA user should have no idea that call is flowing through different router. Is this possible? <Ranjit> Possible. I would assume that similar (yet totally different) technology is used for SIP mobile phones? Regards Attila -----Original Message----- From: Avasarala Ranjit-A20990 [mailto:[email protected]] Sent: 30 March 2010 09:50 To: Attila Sipos; [email protected] Subject: RE: [Sip-implementors] what is SIP technology for switching betweennetworks? Hi I think you need to use a combination of High Availability SIP servers and Interworking Gateways to switchover from one network to another or to switch from one server to another in case of a server breakdown. For a more detailed explanation, could you elaborate your questions as to between which networks you want to interwork and what u mean by network going down - is it a particular server (master server) going down and u want to seamlessly switch to slave (backup server)? Thanks Regards Ranjit -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Attila Sipos Sent: Tuesday, March 30, 2010 1:55 PM To: [email protected] Subject: [Sip-implementors] what is SIP technology for switching betweennetworks? If you have a SIP call and you have two fully independent and unreliable networks, what technology can be used to automatically/seamlessly switch a live call from network to another (as one network goes down)? . _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
