Add Channel Service Units
About Installing an ICSU Module
SI Installation and Upgrades
651
June 2004
Add Channel Service Units
A channel service unit (CSU) can be either an integrated CSU (ICSU) module or a 3150/3170 CSU
module. See the relevant topics:
•
About Installing an ICSU Module
on page 651
•
Installing the 120A3A CSU
on page 652
•
Installing a 3150/3170 Channel Service Unit
on page 654
About Installing an ICSU Module
The integrated channel service unit (ICSU) is a combination of a 120A3A CSU module integrated with a
DS1 circuit pack. A 700A DS1 loopback jack must be installed with this device.
See
Installing the 120A3A CSU
on page 652 for step-by-step installation procedures for the 120A3A
CSU.
NOTE:
Re-manufactured/repaired ICSU units and any manufactured after May 7, 2002 are
marked as “120A3A.”
Check for required components
The ICSU package contains:
•
120A3A CSU module
•
700A DS1 loopback jack
•
Cable H600-383
4-pair modular cord
Group 2, 50-foot (15.2 m) cable (standard)
NOTE:
If using cabling other than the H600-383, see
H700-383-Equivalent Cable Guidelines
on
page 652.
•
Cord DW8A-DE
4-pair modular cord to alarm contacts
•
DS1 circuit pack
The basic ICSU requires a TN464E or TN767D or later. The enhanced integrated channel service
unit can also be used with the TN2464BP or TN2313/AP.
