User guide

68-11089-115

1.2

EXB Communication Channel Interfaces

This section describes the communication channel interface of the EXB-TELCO module and the

EXB-Serial module. This interface provides the network connection between the remote MCN

networks.

1.2.1

EXB-TELCO Communication Channel Interface

The internal modem in the EXB-TELCO module uses proven V.32 terbo modulation,

transferring data at 19,200 bits per second. This modem is unique, however, in its ability to

transfer voice simultaneous to data using only a single voice-grade circuit between two EXB-

TELCO modules. This bidirectional voice channel exists between each EXB-TELCO module

pair and is accessible via the AUDIO connector on the EXB-TELCO module. This live voice

feature can be used in any application that requires live data as well as voice communication

between personnel or equipment at separate sites.