This is a device allowing a user to make VoIP calls using session initiation protocol (SIP). SIP is a telecommunication technology developed as a fast, easy standard for delivering IP-based data, voice, and video communications.
The MultiVoIP FX SIP gateway ensures fax and toll free voice communications over the IP networks. With integration of fax and voice into you already existing data network, you can make achieve substantial savings on internal office long distance toll charges.