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Foreign exchange office module (fxo) – ZyXEL Communications Multi-service Access Platform MSAP2000 User Manual

Page 150

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7. Product Specification

MSAP2000 Technical Manual V3.0

7-43

7.16. Foreign

Exchange

Office Module (FXO)

Overview

The Foreign Exchange Office Module (FXO) provides 16 analog voice
interfaces, to provide connection to COT voice interchange devices,
such as telephones, fax machines, and modems.

Features
And
Benefits

„ Panel LEDS indicate status, faults, alarms, and network

connections.

„ Loop status detection and Signaling exchange
„ A-law or u-law compounding
„ Application of advanced DAA (Data Access Arrangement) design
„ Alarm and Fault monitoring and reporting
„ Timeslot assignment for Voice Services
„ Use of non-volatile memory devices for performance data storage

Function Diagram

Application

FXO provide Z-interface to 2-wire analog PSTN switch. And when it is
used, a corresponding FXS must be installed in the RT to provide the
voice services.

OIM/
SM1/

SM4

FXS

FXS

MLTM

MPM

Test Bus

OIM/
SM1/

SM4

FXO

FXO

MLTM

MPM

PSTN Switch

Test Bus