Cisco Prisma II Forward Optical Receivers 安装指南

 

2 

 

741983 Rev C 

The Prisma II platform allows the ICIM to be located in one chassis and control 
application modules located in several other chassis.  This communication “daisy-
chain” can be enabled by connecting cables to the ICIM IN and ICIM OUT 
connectors located on the connector interface panel of the chassis.  This connection is 
required if an ICIM in one chassis is to communicate with or control any application 
module located in a separate chassis.  

Every Prisma II Chassis has a DB9 ICIM IN and an DB9 ICIM OUT connector for 
the purpose of chassis-to-chassis ICIM connections.  ICIM OUT is a male connector 
and ICIM IN is a female connector. 

ICIM OUT

ICIM IN

The cable required for both ICIM IN and ICIM OUT connections is a standard “off 
the shelf” serial extension cable, DB9 Female to DB9 Male.  This cable can be 
purchased at your local computer store or from Scientific-Atlanta.   

The Scientific-Atlanta part number for a 6-foot DB9 Female to DB9 Male serial 
extension cable is 180143.  The connectors are a Serial – 9 pin D-shell (EIA 574/232). 

To make chassis-to-chassis ICIM IN and ICIM OUT connections, follow these steps. 

1. 

Connect the serial extension cable from the ICIM OUT of the chassis 
containing the ICIM to the ICIM IN connector of the second chassis. 

2. 

Connect a serial extension cable from the ICIM OUT of the second chassis to 
the ICIM IN of the third chassis. 

3. 

Continue this “daisy-chain” connection until all desired chassis are 
connected.  

Notes:  

•  All chassis connected in this “daisy-chain” must be powered and have a fan tray 

installed.  A chassis that is connected but is either not powered, or does not have a 
fan tray installed, will cause faulty operation of the ICIM.  

•  All chassis connected in this “daisy-chain” must have a unique chassis ID number.