I’m trying to setup fail-over for ISP but the issue is both ISP have different static IP’s and my DID provider only bind one IP. I was reading about setting it up using DDNS but not sure how to.
Also I was reading its not a recommended solution as its not always stable.
Can anyone guide me if there is any other way to setup fail-over with different IP’s? If not what changes do I have to make in asterisk server?
System:
Ubuntu 14.04.4
Asterisk 11.7.0
using SIP with cisco 7960 IP phones
system is behind NAT
If the limiting factor is the ITSP only wants to point to one IP, then you should check into a provider of a QOS VPN device - then you can have multiple different ISP’s but to the world you will present a single IP address that the ITSP points to.
We use Bigleaf for this (http://www.bigleaf.net) - they also have the advantage of enabling QoS on circuits that do not support it - such as DSL.
If your ITSP can set up failover to multiple IP’s then just have a router on each circuit both forwarding traffic to the Asterisk, and then DynDNS will do the trick for determining the external address in use for NAT purposes.