user manual

ND-20292
CHAPTER 2
APRIL, 1990
Refer to section 220.11 of this document for
specifications. Refer to Table ZOO-16 for lead
identifications, and Figure ZOO-8 for station modular
jack (RJlJCI W) connection.
STATION
CABLE
i I!\ [ MODULAR
i 1 m 1 i TERMINAL
L---m! - - -I
Figure ZOO-8 Modular Terminal for Connection of
Multiline Terminals, DSS/BLF, CO
Add-On Modules, RAA-E, and SLT
B. Only DTMF dial, Single Line Telephones (SLT),
standard 2500 type, are able to dial within the
. Electra Mark11 System. One pair cabling is
required, it is recommended that twisted pair
cabling be used.
Refer to Section 220.11 of this document for
specifications. Refer to Table ZOO-16 for lead
identifications, and Figure ZOO-9 for simplified
schematic of station termination.
STATION CABLE
R (RD)
TO MDF T (GN)
1
i _ _ _ _ _ _ _ _ &--g-_-----J
R T
SINGLE LINE TELEPHONE
Figure 200-9 Simplified Schematic of SLT Connection
For additional CO line connections to additional SLTs,
similar cross connections should be made.
Since all of the SLTs must be equipped with DTMF
dials, the outside lines must allow tone dialing if
dialing during power failure is required.
If trunks are
Ground Start, then SLTs must be equipped with a
ground button.
C. When SLTs are installed, they can operate as
power failure telephones, via cross connection on
the MDF.
co3
SLI-EB
SLT
TIP - PT +-------- TIP
RING - PR +------- RING
As an example, to have a Single Line Telephone ring
on incoming calls to C03, during a power failure, or
brownout, connections on the MDF are as shown in
Table 200-16.
NOTE: SLTs used for Power Failure Transfer must
be supported by an SLI-EB ETU.
SECTION 240
CENTRAL CONTROL UNITS (CCUs)
CONNECTION
240.1 WALL MOUNTING THE CCU
NOTE: UL regulations require the fourth CCU
to always be mounted to the wall, to be
provided with a base panel, and never to
be attached to the other three CCUs,
when they are also wall mounted.
Mounting of the fourth CCU should be
considered at the beginning but
performed at the end of the CCU wall
mounting.
A.
B.
The ESE-32B-1 CCU is equipped with two metal
wall mounting brackets. These brackets must first
be detached from the CCU to properly wall mount
the unit.
Unscrew the two screws located on the lower
portion of the front panel, then remove the front
panel by sliding it to the left. Place the panel and
screws aside for later reinstallation.
200-18