Welltech FXSO Gateway In SIP V.1.2 - Manual (Page 5)

FXSO SIP Gateway User Manual Document Ver.: 102
Released Dec., 2004
3
1. Start Up
1.1 Introduction
SIPFXSO 1S1O/2S2O is a one-port/two -port FXS+FXO gateway. It
supports an innovative intelligent call rouging function that transparently routes
calls to destination either through PSTN or Internet.
SIPFXSO 1S1O/2S2O provides voice over IP and FAX over IP services
for ITSP/ISP Internet Telephony Services Provider and Office/SOHO IP -PBX
application.
Application Architecture
l FXO ports can connect with PSTN Line or Extension Line of PBX
l FXS ports can connect with Phone Set or Trunk Line of PBX
IP
Network
PBX
FXS
FXS
FXO
FXS
FXS
FXO
PBX
Extension
Extension port
Trunk side
IP
Network
IP
Network
PBX PBX
FXS
FXS
FXO
FXS
FXS
FXO
PBX PBX
Extension
Extension port
Trunk side