Call from CONCRETE VoIP Gateway Port

[jim_christou]

I have 3cx on a windows 2003 server system and an i-call voip provider in greece.

i have a SPA400 voip gateway that it has 4 ports

how can i call from a specific port on SPA400 what i have to do???

sorry for my english an thank you
i'm waiting for your replay (if someone know something)

thank you again!!!