Bell 2565GK Service Manual

BELLSYSTEM PRACTICES SECTION 502-543-403
AT&TCo Standardlssue 7, December 1980
SERVICE
2565GK, 2565GKM, AND 2565GKMS TELEPHONE SETS
CONNECTIONS
1. GENERAL cord conductors can be extended to the control
unit by using a 149-type adapter or 66E-type
1.01 This section contains information for the connecting block. If control unit is located at the
2565GK (MD), 2565GKM (MD), and 2565GKMS key equipment, extend the leads through an A25B
telephone sets (Fig. 1 and 2). connector cable or inside wiring cable. Speakerphone
connections are shown in Division 512.
1.02 This section is reissued to"
2.04 SWhen a 2565GK (MD) or 2565GKM [(MD)
. Show 2565GKM telephone set MD manufactures prior to July 20, 1979] telephone
set is not used as a speakerphone set and is
. Add information on 2565GKMS telephone set multipled with any other set capable of furnishing
speakerphone feature, the T1 (V-G) and R1 (G-V)
. Add D-181006 Kit of Parts (Polarity Guard) speakerphone leads must be disconnected, insulated,
and stored at the telephone set. If not disconnected,
e Add information on the 533K diode (or these speakerphone leads will provide a common
equivalent) which replaces KS-15724L1 diode, path between the circuits of the multipled telephone
sets. Speakerphone connections are shown in
1.03
SThe 2565GKMS telephone set is similar to Division 512.4
the 2565GKM set except the new line switch
is provided on the 2565GKMS which breaks both 2.05 Exclusion can be provided by the addition
the tip and ring side of the line instead of the ring of a D-179935 Kit of Parts which must be
side only.¢ ordered separately. Connect as shown in Table A.
2. CONNECTIONS 2.06 SWhen a polarity guard is required with
these sets, a D-181006 Kit of Parts (ordered
2.01 These sets are factory-wired for use with separately) can be installed and connected as shown
1A1, 1A2, 6A, or 6B key telephone systems in Table B.¢
(KTS), 4A speakerphone, and individual or common
line ringer. They can be used with 1A KTS by 2.07 An 812559623 (P-25E962) terminal strip
modifying as shown in Fig. 3 and 4. Hold feature assembly (ordered separately) is available
is not provided, when additional terminating points are required
for auxiliary services such as buzzers, lamps, etc.
2.02 Early model sets were furnished from the
factory with H1A (MD) ringer, current models 2.08 Installation instructions for the exclusion
have H1B ringer. Provision is made for buzzer, switch, polarity guard, and auxiliary terminal
ordered separately. Use spare pair and terminals strip are given in Reference Section 502-500-120.
to connect to equipment. When power failure
feature is provided in the KTS, audible signal 2.09 All convertible key positions are supplied as
must be wired with capacitor in circuit, pickup keys To convert from pickup
(locking) to signaling (nonlocking), remove the screw
2.03 If 3-type (MD) speakerphone control unit is detail from key positions involved. Make necessary
located near the telephone set, the mounting wiring changes as shown in Table C.
NOTICE
Not for use or disclosure outside the
Bell System except under written agreement
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