FXO VoIP Gateway

53.62  (66.49  inc tax)  
  • HT503,
Grandstream HT503 is an analog telephone adapter (ATA) featuring 1 analog telephone FXS port and 1 PSTN line FXO port in order to offer backup lifeline support using a PSTN line. The integration of an FXO and FXS port enables remote call origination and termination to and from the PSTN line,...