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Line Interface Modules
Serial I/O (SI-2C/SI-4C) LIM Overview
032R440-000
Xedge 6000 Hardware
5-29
Issue 17
Installation & Setup Guide
Serial I/O (SI-2C/SI-4C) LIM Overview
The SI-2C and the SI-4C LIMs have 2- or 4-port serial interfaces and are
intended for use with a variety of controllers as listed in
Table 1-4
.
Front Panel Indicators
Two LEDs per link indicate In Service (IS) and LoopBack (LB).
•
IS
(In Service) LED illuminates when the LIM controller has
finished configuring the LIM, and the associated link is in service.
•
LB
(Loopback) LED illuminates during a digital, link or line
loopback.
SI-2C/SI-4C LIM Cabling
lists cables by interface and DTE/DCE mode of operation.
DCE/DTE Configuration
The SI-2C or SI-4C LIM must be properly configured for DCE or DTE
operation on all links before installation in the Xedge chassis. When
shipped from the factory in
DCE mode
, the resistor packs for each link
are positioned in the default DCE Port socket locations, as shown in
.
If your application requires the LIM is configured for DTE mode, you
must perform the following steps for each link:
1. Move the 16-pin resistor pack from the
DCE PORT 0
socket to
the adjacent empty DTE socket labeled
DTE PORT 0
.
2. Move the 16-pin resistor pack from the
DCE PORT 1
socket to
the adjacent empty DTE socket labeled
DTE PORT 1
.
Note
IMPORTANT! The resister packs are the only 16-pin DIP (Dual Inline Package) on the board. Use care when
removing and installing the resistor packs. Do not bend or break the pins.
Table 5-10
Cable Compatibility
GDC Part
Number
Cable for Connecting EIA/TIA Alt A to:
027H444-005
RS449 DTE
027H445-005
RS449 DCE
027H442-005
EIA/TIA530 DCE
027H443-005
EIA/TIA530 DTE
027H446-005
V.35 DCE
027H447-005
V.35 DTE
027H440-005
X21 DCE
027H441-005
X21 DTE
L0
IS
LB
L1
LINK 0
LINK 1
SI-2C
L0
IS
LB
L1
IS
LB
L2
L3
LINK 0
LINK 1
LINK 2
LINK 3
SI-4C