Adding or Removing Hardware
292 Installation, Upgrades and Additions for Avaya CMC1 Media Gateways
Installing an Integrated ChannelService Unit (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 thi s dev ice .

Checking for required components

The integrated channel service unit (ICSU) package contains:
●120A3A CSU module
Note:
Note: Re-manufactured/repaired ICSU units and any manufactured after May 7, 2002
are marked as “120A3A.”
●700A DS1 loopback jack
●Cable H600-383
4-pair modular cord
Group 2, 50-ft (15.2-m) cable (standard)
●Cord DW8A-DE
4-pair modular cord to alarm contacts
●DS1 circuit pack
The basic ICSU requires a TN464E or TN767D or later suffix. The enhanced ICSU r equires
a TN464F/GP/HP or TN767E or later suffix. The enhanced ICSU can also be used with the
TN2464 or TN2313.