ND-20292
CHAPTER 2
APRIL, 1990
Each interface and optional ETU contains a switch
(SWl) to protect its circuitry from damage during
insertion and removal while power is applied to the
unit, make it a habit to ensure this switch is OFF. (See
Figure 200-l)
Insertion Guide
Front
View of
Installed
ETU
x
SW1
Side View
of Installed
ETU
ON
1
d SW1
OF��F
Figure 200-l SW1 of ETUs

SECTION 220

SPECIFICATIONS

220.1 GENERAL INFORMATION
Prior to configuring a system, first complete the job
specification sheets provided (ND-20234) with the
CPU-Et ) ETU, and ensure all types of station
equipment, time outs, and feature options are taken
into account.
An understanding of the system programming is
required to properly complete the job specification
forms.
Even though each CCU has eight interface slots and
thirty two ports, not all ports are used for installing
station equipment. The hardware requirements will
dictate the availability of ports for installing station
equipment.
Twenty five pair cable binders to the MDF should,
when possible, pair the same type ETUs together
within a cable binder. This will simplify the MDF
wiring.
220.2 PROGRAMMING STATION
A maximum of four programming positions can be
available in a system. Station equipment connected
to the first two ports of the first ESI-E( ) ETU are
automatically set as programming positions and
must be ETE-16D-( ) Multiline TerminaIs. A third
programming position can be assigned to any interface
port, with an ESI-E( ) ETU and ETE-16D-( ) installed,
by either the first or second programming Multiline
Terminal or the RAA-E Unit. The fourth position
becomes available when the RAA-E Unit is installed.
The first two programming positions are system
attendants and are fixed in system software.
,‘.
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;:
220.3 ATTENDANT STATIONS
A maximum of four Attendant positions can be
installed in a system. Attendant stations must be
ETE-16D-( ) Multiline Terminals that are supported by
an ESI-E( ) ETU. The third and fourth Attendant
positions can only be assigned to the first ESI-E( )
ETU, ports three and four.
Attendant Multiline Terminals can operate in
conjunction with up to two EDE-30-t ) DSS/BLF
Consoles and/or one CO Add-On Module. Each
DSS/BLF Console and CO Add-On Module must be
supported by an ESI-E( ) ETU. The EDE-30-c ) can be
attached to an ETE-16D-( ) and/or another EDE-30-( ),
using the metal bracket supplied with each EDE-30-t )
unit.
A maximum of six EDE-30-t > units can be installed per
system of which a maximum of four can be assigned as
CO Add-On Modules (one per Attendant position). No
more than six EDE-30-( ) units, (CO Add-On Module
and/or DSS/BLF) can be installed per system.
220.4 DETERMINING EQUIPMENT
REQUIRED
1. Station Equipment
Determine the type and the quantity of each station
equipment being installed.
Types of station equipment available are as follows:
a. ETE-6-c ) TEL
(6 line Multiline Terminal without LCD).
b. ETE-GD-( )TEL
(6 line Multiline Terminal with LCD).
c. Dkrm Series11 ETE-16-2 TEL
(16 line Multiline Terminal).
d. ETE-16D-( )TEL
(16 line Multiline Terminal with LCD).
e. ETE-16K-1 TEL
(16 line Multiline Terminal with directory
LCD).
-f. Single Line Telephone without Message Wait
Lamp.
g. Single Line Telephone with Message Wait
Lamp.
h. EDE-30-t ) DSS/BLF Console.
i. EDE-30-t ) CO Add-On Module.
2. Interface ETUs
Table 200-l shows the recommended quantities of .!L
MFR-EA ETUs. The actual quantity, for satisfactory
service, will vary depending upon the amount of Single
200-2