CTI Products EXB-232 Asynchronous Serial System Extender - Manual (Page 5)

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1
1. Introduction
The Extender Module (EXB) is used in pairs to connect multiple MCN modules in real-time,
spanning distances from building-wide to worldwide. Two types of EXB modules are available,
supporting different communication channels that connect the remote networks. The EXB-
TELCO module supports any analog or digitized analog channel that is capable of carrying V.32
terbo standard modem signaling, including 2-wire or 4-wire leased lines or microwave channels.
The EXB-TELCO Module does not provide any dialing capability, therefore it cannot be
used over dial-up lines. Figure 1 shows an example system that using the EXB-TELCO
modules to connect networks in two remote buildings.
CA-80166-100
COMPARATORS
CIB
CIB
IIB
IIB
CONSOLE
ELECTRONICS
1
T
P/S
T
IN
IN
OUT
OUT
CONSOLE
P/S
EXB
IN
OUT
IN
OUT
T T
OUT
IN
OUT
IN
BUILDING 1 BUILDING 2
EXB
2
Figure 1 MCN module in two buildings connected with EXB-TELCO Modules