FXS Ports 6-1
Chapter 6FXS Ports

6.1 Introduction

This chapter provides connector pinout, configuration, and troubleshooting information for
the Foreign Exchange - Station (FXS) Voice por t. This port is labeled Voice. See Appendix C
for pinouts of this connector.
This port manages the flow of FXS voice traffic over the network. Each port encodes an alog
(voice, VF) signals to a digital bitstream at the local system for transmission over a T1
network. It also decodes the digital signals to analog at the remote system.
Each of the four FXS ports have two-wire interfaces that support FXS and PLAR. FXS allows
users to connect the system to a two-way (both inbound and outbound calls) PBX trunk or a
key system trunk. All the ports are pre-set to use the loop-start function with POTS stations
and simple PBX trunks.

6.2 FXS Descriptions

6.2.1 IMACS-200-FXS Description

The IMACS-200-FXS port has four ports and provides a 600-ohm terminating im pedance on
each port. All FXS features are supported by the IMACS-200.

6.3 FXS User Screens and Settings

6.3.1 FXS Main Screen

You must configure the FXS ports for opera tion. Thi s is done from the FXS Main Screen ( see
Figure 6-1). To go to that screen, highlight the desired port in the System Main Screen and
press <Enter>. This screen shows one configuration column for each port o n the IMACS-200.