I have such infrastructure:
Ast1 (provider 1) - IP1
Ast2 (provider 2) - IP2
Softphones on client computers with configured two IPs to two Asterisk servers. User has to manually switch between each server.
I need to change this that user will have only one account configured (eg. IP3) and on IP3 will be an application to forward call to Ast1 or Ast2. So IP3 will be something like a proxy server. Is it possible? If not, what is the best way to manage traffic without modifying dialplan?