BEU SYSTEM PRACTICES
AT
&
TCo Standard
SECTION
S
12-620-440
Issue 5, July
1979
630-, 631-, 1630-, 1631-, 2630-, AND 2631-TYPE TELEPHONE SETS
CONNECTIONS
SPEAKERPHONE SYSTEM-3-TYPE
1.
GENERAL
1.01
This section covers information for the 630-,
631-, 1630-, 1631-, 2630-, and 2631-type 18-
or 30-button, rotary or TOUCH-TONE3 dial telephone
set when used with the •3-type (MD)• speakerphone
system.
1.02
This section is reissued to:
•
Show 3-type speakerphone system MD
•
Show 2021B transformer MD
•
Add 2012D transformer
•
Add modular telephone sets.
1.03
All single and double letter coded telephone
sets are rated Manufactured Discontinued
(MD). All modular telephone sets except 630DAM1,
631DAM1, 2630DAM1, and 2631DAM1 are also MD.
2.
MODI FICA liON
2.01
Codes -11, -12, and -13 of the 630-, 1630-,
and 2630-type telephone sets and codes -16,
-17, and -18 of the 631-, 1631-, and 2631-type
telephone sets are factory-wired for speakerphone.
Other codes can be modified by installing a transmitter
in the third or fifth module and making the necessary
wiring changes. In rotary sets replace the 8R or
8RA dial with an 8CA dial, where required.
A. 630A(MD), 630B(MD), 630C(MD), 630D(MD),
631A(MD), 631B(MD), 631C(MD), 631D(MD),
1630D(MD), 1631D(MD), 2630D(MD), and
2631D(MD) Telephone Sets
2.02
Convert as follows.
(a) Remove telephone set faceplate and housing.
(See Section 502-600-100 for procedures.)
(b) Remove key unit or apparatus blank in
right-hand module position (third or fifth
module) and plug in a 667B (MD) transmitter
(ordered separately).
(c) Connect spade-tipped leads of transmitter
as shown in Fig. 1, 2, 3, 5 and Table A.
(d) Install housing.
(See Section 502-600-100
for procedures).
(e) Install new faceplate and mat (ordered
separately) in which cutouts for the transmitter
are provided. Refer to the appropriate Reference
section in Division 502 for ordering information.
B.
630DA(MD), 630DAM, 631DA(MD), 631DAM,
2630DA(MD), 2630DAM, 2631DA(MD), and
2631DAM Telephone Sets
2.03
Convert as follows.
(a) Remove faceplate and housing. (See Section
502-600-100 for procedures).
(b) Disconnect line plugs from key unit or
apparatus blank in third module and remove
key.
(c) Install 679A (MD) transmitter in third or
fifth module and connect slate plug to
receptacle on rear of transmitter. Insulate and
store balance of plugs.
(d) Modify set per Fig.
4,
6 and Table D, F.
(e) Replace housing.
(See Section 502-600-100
for procedures).
NOTICE
Not for use or disclosure outside the
Bell System except under written agreement
Printed in U.S.A.
BSP S12·620·440-105_1979-Q7-0l.jpg Scanned by Frank Harrell, {Cowboy Frank) Castle Rock, Colorado Feb 16, 2012 23:00:26
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