How do I create an intercom based on Avaya 1608-i IP phones?

Question

Asterisk

There are 4 Avaya 1608-i phones, they do not support SIP protocol, only H.323. It is necessary to make an internal connection based on them (preferably with the conference function, but not necessary). Is this possible and what is needed for this? I want to use a server based on Asterisk for these purposes, or maybe there is something simpler? There will be a maximum of seven subscribers, while only four. It is not planned to connect them to the outside.

Answer 1

EMNIP, these phones can only work with Avaya stations.

Answer 2

No chance - there are no successful cases of launching this device on anything other than native PBX