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INSTALLATION-TELEPHONE
SECTION 200-096-207
FEBRUARY 1991
1 GENERAL
1.00
This chapter provides the general instruc-
tions to connect electronic telephones, digital
telephones, standard telephones (including door
phones and door locks), and DSSDDSS consoles
to DK systems.
1.01
The chapter also includes procedures to
upgrade electronic and digital telephones for Loud
Ringing Bell/Headset Interface and Off-hook Call
Announce capability, and to wall-mount electronic
and digital telephones.
2 ELECTRONIC TELEPHONE
UPGRADE OPTIONS
2.00 Electronic telephones may be upgraded to
include a Loud Ringing Bell/Headset Interface and
Off-hook Call Announce capability.
2.01 Loud Ringing Bell/Headset (HHEU)
Upgrade.
The Loud Ringing Bell/Headset (HHEU)
upgrade enables an external speaker (HESB) and
a headset to be connected to the electronic tele-
phone. In this configuration, the HESB serves as a
loud ringing bell.
NOTE:
Refer to Peripheral Equipment Installation,
Section 200-096-208, for installation proce-
dures for the HESB.
2.02 Off-hook Call Announce (OCA)
Upgrade.
The Off-hook Call Announce (HVSU/
HVSI) upgrade allows the telephone to receive
calls when the handset is off the hook.
2.10 Electronic Telephone Upgrade Instal-
lation
2.11 HHEU Upgrade Installation.
Install the Loud
Ringing Bell/Headset (HHEU) upgrade in accor-
dance with the following steps:
NOTE:
If the telephone is equipped with the Loud
Ringing Bell/headset (HHEU) and OCA (HVW
HVSU) upgrades, the HHEU version must be
HHEU IA, V.2 or later.
7-I
HANDSET
PLASTIC
FIGURE 7-I-REMOVING ELECTRONIC
TELEPHONE BASE
1) Loosen the four captive screws securing the
telephone base (Figure 7-l ), and remove the
base.
2) Using a screwdriver or other suitable tool,
remove the plastic tab located on the back of
the base (Figure 7-l). The HHEU modular
connector will be accessed through this
opening.
3) On the HHEU, set the
SW601
switch to the
Headset position for HESB and/or headset
connection (Figure 7-2).
4A) Connect the HESC-65 or HESC-65A cable
(either one) to
P601
of the HHEU if the Loud
Ringing Bell option is required (see Figure 7-
4), and refer to HESB Option Installation,
Section 200-096-208.
4B) For the telephone speaker only (not the
headset receiver) to receive OCA, cut one
side of the R607 resistor on the HHEU and
then remove the resistor so that no electrical
connection exists. (see Figure 7-2).