StoneFax interacts with the IP PBX through SIP or H.323 protocols using either T.38 or G.711 passthrough modes.
The SIP configuration is suggested. Remember to enable the new StoneFax engine and enable SIP in the StoneFax – Manage Service – IP Routes page on the Application Suite.
Note: the cross platform version of StoneFax llistens for incoming faxes on the standard H.323 port 1720 and standard SIP port 5060