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- Aug 8, 2018
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Firstly please excuse me as I'm a network guy and am going to butcher the phone speed in my description.
I'm working with AT&T and a 3CX contractor to come up with a HA geo redundant solution. I have have them at other locations but the "phone guys" handled the setup.
Does anyone using a 3CX system have AT&T IP Flex service with two geo redundant sites? The IP Flex service will detect if primary site is up or down. If down it will auto route the inbound call to the backup site. Backup site 3CX server has list of "dummy extension" and will route the call over the site-to-site VPN to primary site 3CX server which will ring the handset.
Contractor says they can get this setup.
Then I asked ok, what about outbound calls? How with the phone system at primary site handle outbound calls when the primary SIP server is down? How would it know to route the outbound call over the site-to-site VPN to the backup location's 3CX server and then out the backup location?
Sorry if I'm messing this up.. but I think you can follow what I'm looking at.
Do I need a SBC maybe that would detect links that are up and route the call? That way the 3CX systems would only need to know about the SIP connection to the SBC... right? or maybe I have no idea what I"m talking about.
I'm working with AT&T and a 3CX contractor to come up with a HA geo redundant solution. I have have them at other locations but the "phone guys" handled the setup.
Does anyone using a 3CX system have AT&T IP Flex service with two geo redundant sites? The IP Flex service will detect if primary site is up or down. If down it will auto route the inbound call to the backup site. Backup site 3CX server has list of "dummy extension" and will route the call over the site-to-site VPN to primary site 3CX server which will ring the handset.
Contractor says they can get this setup.
Then I asked ok, what about outbound calls? How with the phone system at primary site handle outbound calls when the primary SIP server is down? How would it know to route the outbound call over the site-to-site VPN to the backup location's 3CX server and then out the backup location?
Sorry if I'm messing this up.. but I think you can follow what I'm looking at.
Do I need a SBC maybe that would detect links that are up and route the call? That way the 3CX systems would only need to know about the SIP connection to the SBC... right? or maybe I have no idea what I"m talking about.