Loosen the four captive screws securing the
TO HVSU
telephone base (Figure
5-1),
and remove the
CONNECTOR (P2)
base.
2. Depending on the telephone, refer to Figure 5-7,
5-8,
or 5-9 and locate the
straps,
and
W102.
Cut these straps.
3.
Reinstall the telephone base, and secure it with its
four captive screws.
Note:
Refer
to
Chapter
Diagrams for
external
power supply ordering
information and installation instructions.
5.3.1 0
ADM
Installation
See Section
5.7
in this chapter.
5.4
Electronic Telephone Upgrades
This section describes how to upgrade and configure
electronic telephones for features and options.
5.4.1
Off-hook
Call Announce Upgrade
or
Electronic telephones must be equipped with either
the
subassembly or the combined HVSU and
HVSl subassemblies to receive Speaker Off-hook Call
Announce (OCA) calls. These telephones also require
three-pair wiring to receive speaker
OCA,
instead of
the standard two-pair. Telephones making speaker
OCA
calls
do not require an upgrade or extra wire
pair.
See Notes
1,
3
in Subsection
5.3.3.
2.
Handset OCA is not available on
electronic telephones.
Upgrade Installation
Install the
in accordance with the following
steps:
1.
Loosen the four captive screws securing the
telephone base (Figure
and remove the
base.
Position the
on the standoffs inside the
base, and secure with the two provided screws
(Figure 5-12).
3.
Connect the
wire plug
to
the
P2
connector
on the printed circuit board (PCB) in the telephone
(Figure 5-13).
2.
ON MAIN PCB
INSIDE
TELEPHONE
Figure 5-1
2
Installation for
Electronic
Telephones
Upgrade Installation
Install the
subassemblies in accordance
with the following steps:
Loosen the four captive screws securing the
telephone base (Figure
5-1),
and remove the
base.
2. Align the
connector on the HVSl subassembly
with the receptacle
on the HVSU subassembly
(Figure 5-14). Apply firm, even pressure to the
to ensure that the connectors mate properly
(they should click).
Note:
Exercise care when assembling the
HVSU to
the
HVSl to prevent damage to the connector
pins; also, verify that
HVSU is aligned
the silk-screened image on the
3.
Position the
subassembly
on
the
standoffs inside the base, and secure with the two
screws provided (Figure 5-14).
4. Connect the
subassembly wire plug
to the P2 connector on the electronic telephone
PCB (Figure 5-13).
,
January
1996
5-1
1
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