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Line Interface Modules
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
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
Table 5-10
lists cables by interface and DTE/DCE mode of operation.
Table 5-10
Cable Compatibility
GDC Part
Number
027H444-005
027H445-005
027H442-005
027H443-005
027H446-005
027H447-005
027H440-005
027H441-005
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
Figure
5-17.
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.
032R440-000
Issue 17
Cable for Connecting EIA/TIA Alt A to:
RS449 DTE
RS449 DCE
EIA/TIA530 DCE
EIA/TIA530 DTE
V.35 DCE
V.35 DTE
X21 DCE
X21 DTE
Xedge 6000 Hardware
Installation & Setup Guide
Serial I/O (SI-2C/SI-4C) LIM Overview
SI-2C
Table
1-4.
LB
SI-4C
LINK 0
LINK 0
LINK 1
LINK 1
L0
L1
IS
L0
L1
LB
IS
IS
LB
L2
L3
LINK 2
LINK 3
5-29
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