GAI-Tronics LE200-RM Rack-Mount Page/Party Line Extender - Manual (Page 20)

Pub. 42004-392G
M ODEL LE200-RM R ACK -M OUNT P AGE /P ARTY
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L INE E XTENDER P AGE 18 of 56
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Data Links between Line Extenders
The LE200-RM is equipped with two different data link types for connecting to another Line Extender.
The two data types are T1/E1 and Low Voltage Differential Signaling (LVDS). The type of data
connection(s) required is determined by the system architecture. It is possible to use both types at the
same time to achieve complex system architectures. Each data type, the intended use, and the applicable
switch settings are described below.
T1/E1 Data Link
The T1/E1 data link connection is the most common and is used when one pair of Model LE300 Line
Extenders are connected in point to point system architecture over a long distance. The T1/E1 carrier
technology uses dedicated copper cable or fiber optic cable when equipped with a T1/E1 fiber optic
modem. The distance between Line Extenders determines the type of connection needed. Copper wire
connections between the Line Extenders require a two-pair cable and will operate at a distance of up to
6000 feet using No. 22 AWG wire. For distances greater than 6000 feet, a T1/E1 fiber optic transceiver
and fiber optic cable must be used.
N OTE : The Model LE200-RM is NOT designed for use with the public switched telephone network.
Low Voltage Differential Signaling (LVDS) Data Link
The LVDS data link connection is used to connect two or more LE200-RM Line Extenders in a “daisy
chain” fashion when the Line Extenders are located within 10 meters of each other. The LVDS data link
requires a straight-through CAT5e cable between Line Extenders. Each Line Extender contains an LVDS
data “in” port and an LVDS data “out” port. The “out” port of the first Line Extender connects to the “in”
port of the next Line Extender. This connection scheme can be used to link up to a maximum of eight Line
Extenders and is typically used when multiple Line Extenders are installed in a central location.