Line Interface Modules
E1-2CS and E1-4CS LIM Overview
032R440-000
Xedge 6000 Hardware
5-19
Issue 17
Installation & Setup Guide
E1-2CS and E1-4CS LIM Overview
The E1-2CS and the E1-4CS LIMs are 2- and 4-port E1 LIMs with voice
capability that can be used with a variety of controllers listed in
.
Front Panel indicators
•
IS
LED illuminates when the link is in-service.
•
LS
LED illuminates when there is a receive loss of signal alarm for
the link.
•
AL
LED illuminates during loopback tests; Blinks when the link
hardware detects an out-of-frame error on the receive line.
Front Panel Connectors
•
LINK 0
and
LINK 1
on the E1-2CS LIM are female DB-15
connectors for Link 0 and Link 1 E1 transmit and receive line.
•
LINK 0
,
LINK 1
,
LINK 2
,
and LINK 3
on the E1-4CS LIM
are female DB-15 connectors for Link 0, Link 1, Link 2 and Link 3 T1
transmit and receive lines, respectively.
•
lists the pin/signal designations.
E1-2CS or E1-4CS Cabling
The E1-2CS and E1-4CS LIM links are cabled according to the configured
link type: 120-ohm balanced or 75-ohm unbalanced.
•
When configured for 120-ohm balanced mode, use one 120-ohm
twisted pair each for transmit and receive, following
law. The
maximum insertion loss is 6-db at 1024-kHz.
•
When configured for 75-ohm unbalanced mode, use one 75-ohm
coaxial cable each for transmit and receive, following
law. The
maximum insertion loss is 6-db at 1024-kHz.
•
For E1-2C or E1-4C LIMs in 75-ohm mode, you must use the
DB 15-to-BNC adapter, Part Number 029H212-001.
•
For E1-2CS or E1-4CS LIMs in 75-ohm mode, you must use the
DB 15-to-BNC adapter, Part Number 029H214-001.
Figure 5-12
E1-2CS and E1-4CS LIM Front Panel Features
LINK 0
E1-2CS
LINK 1
L0
IS
LS
L1
AL
LINK 0
L0
IS
LS
L1
AL
IS
E1-4CS
LINK 1
LS
AL
L2 L3
LINK 2
LINK 3
F
F
