I have Avaya G450 gateway and i am using my H.323 terminal, Avaya softphone and avaya one x communicator successfully in the my own network (within the LAN).
We have set up L2TP VPN for connecting to the internal network from the outside. I am trying to use the softphone through L2TP VPN, i am able to reach (ping the server) but the softphone is not registering.
Can anybody tell me how i can solve this issue? which ports i need to open in the Juniper and how?