The 2-FXS SIP Voip Gateway (ATA) with 2 PSTN Live Line is designed
as a compact, high performance, and low cost VoIP Analog Terminal
Adapter (FXS Gateway). It comes with a FXS port to interface with a
traditional analog phone set or a PBX trunk line for VoIP
communications. By connecting a PSTN line to the Bypass port, the
phone set connected to the FXS port can also access the PSTN line
for traditional telephone service. The HT-522 is a full featured
FXS gateway and is designed for easy installation and
configuration. It is an ideal low cost solution for travelers and
SOHO users.