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Bell System Practices Plant Series Reference

Telephone sets

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BELL SYSTEM PRACTICES
Plant Series
GENERAL
1.
This section provides identification, installation,
1.01
maintenance, and connection information for
the 1750-type telephone set previously contained in
Sections 502-750-100 and 502-750-420 which are
hereby canceled.
IDENTIFICATION
2.
Ordering Guide
Set, Telephone, 1750A-58 or 1750B-60
2.01
Note:
-58 includes white handset, aluminum
mat, and light gray plastic frame. -60 includes
light beige handset, copper mat, and light
beige plastic frame.
2.02
Replaceable Set Components Are Listed
in Table A
2.03
Associated Apparatus or Equipment
(ordered separately):
eApparatus Box, 113-type or l14A (recessed
mounting)
eD-180071 or D-180072 Kit of Parts (surface
mounting)
eConnecting Block, 71B
2.04
Loose Parts Furnished
eP-900232 Cord and Plug Assembly or Cord
Mounting, D4BN-3 equipped with 423A plug
einstruction Booklet, GN-2408
eP-160828 Mounting Screws (4)
eP-25E803 Card Retainer
Scanned by Frank Harrell, !Cowboy Frank) Castle Rock, Colorado Jan 31, 2012 22:23:55
-i01_1970-03 ·01.jpg
SSP S02-706-100
REFERENCE
1750-TYPE TELEPHONE SETS
Design Features
2.05
using D-180071 or D-180072 Kit of Parts (Fig. 1).
2.06
by a plastic frame covers the panel and gives the
installation a finished appear a nee.
Application
2.07
full selective on CO or PBX lines.
2.08
2.09
when specified by local instructions for end-to-end
signaling installations.
connections.
3.
Apparatus Boxes
3.01
With
Set:
3.02
®
American Telephone and Telegraph Company, 1970
Printed in U.S.A.
The 1750-type telephone set may be recess
mounted or adapted for surface mounting
Component parts of these sets are mounted
on a steel panel. An aluminum mat retained
Can be wired for bridged, two-party flat
rate, two-party message rate or four-party
Can be modified for use with 1A1 or 1A2
KTS. Refer to Table B .
The polarity guard is optional and must be
ordered separately.
Refer to Table C for
INSTALLATION
Refer to Division 463 for information on
installing apparatus boxes.
To install telephone set in box:
(1)
Remove cover of apparatus box, if so equipped
(see section covering apparatus boxes).
(2)
Install 71B connecting block (ordered separately)
to mounting bracket located in upper right
corner of apparatus box.
for further information on this type of connecting
block.)
SECTION 502-706-100
Issue 1,
March
1970
AT&TCa Standard
It is intended for use
(Consult Division 461
Page
1

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Summary of Contents for Bell System Practices Plant Series

  • Page 1 BELL SYSTEM PRACTICES SECTION 502-706-100 Plant Series Issue 1, March 1970 AT&TCa Standard REFERENCE 1750-TYPE TELEPHONE SETS GENERAL Design Features This section provides identification, installation, 1.01 The 1750-type telephone set may be recess 2.05 maintenance, and connection information for mounted or adapted for surface mounting the 1750-type telephone set previously contained in using D-180071 or D-180072 Kit of Parts (Fig.
  • Page 2 SECTION 502-706-100 P-89C261 FOR D-180071 OR P-89C260 FOR D-180072 KIT OF PARTS MAT RETAINER FRAME T ELEPHONE SET MOUNTING BRACKET Fig. 1-D-180071 or D-180072 Kit of Parts for Surface Mounti D-180071 or D-180072 Kit of Parts (Fig. 1) Secure mounting cord stayhook and terminate inside wire or cable and mounting cord.
  • Page 3: Maintenance

    ISS 1, SECTION 502-706-100 4.02 Ringers, handsets, dials, etc. used in these Connect mounting cord plug to connector on sets should be maintained in accordance with set panel. Dress mouunting cord to avoid interference with telephone set components. section covering the particular item. 4.03 (5) Align panel of set with mounting screws The exterior of these sets should be clean...
  • Page 4 SECTION 502-706-1 00 P-44E501 (UPPER HALF) P-44E502 (LOWER HALF) Fig. 3-Removal of Handset Cord Grommet Page 4 502-706-100-i01_1970·03·04.jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Jan 31,2012 22:25:48...
  • Page 5 40100 TERMINAL 2!5W3 DIAL .CORD P-900232 LINE NETWORK LINE STRIP BLOCK RINGER SWITCH WIRE CONN BLOCK Ll (W) NOTES: IN SETS Of £ARLY MANUfACTURE (S) LINE SWITCH LEAD WAS CONNECTED TOR AND (0) (0-0) Of P44E055 MOUNTING BLOCK. 2. SET IS fi.CTORY-WIREO fOR BRI(X;(O R INGING.
  • Page 6 "' "'I ..i�o � � llNE LINE 25A3 DIAL 40108 OR 40100 NETWORK "' WIRE BLOCK RINGER SWITCH .:.. ASS'I' OR 04BN- CORD (NOTE (0 )(0-0] {8L) [S-BL] NOTES. IN SETS OF EARLY MANUFACTURE,($) LINE SWITCH LEAD WAS CONNECTED TO R AND {0) TO BK OF P44E055 MOUNTING BLOCK.
  • Page 7 ISS 1, SECTION 502-706-1 00 TABLE TABLE A MODIFICATIONS FOR USE WITH 1A1 OR COMPONENT ORDERING GUIDE 1A2 KTS (COLOR SIGNIFICANT) COLOR FROM LEAD LINE TELEPHONE FRAME SWITCH HANDSET (MAT) ASSEMBLY (Y)[S-Y] R• y• Line (BR)[S-BR ] G3K-58 1750A-58 P-26E932 P-84A261* P-85A161 (G)[S-G]...
  • Page 8 .."' TABLE D "'G : .. LIN!: A N D RINGER CONNECTIONS "' TIP PARTY WITH IDENT GRD � $'!DIY I DUAL RING NORMAL RINGER REVERSAL COLOR WIRE OR LEAD PARTY PARTY CONNECTIONS (NOTE I) BRIDGED 1000 2650 1000 2650 OHMS...

This manual is also suitable for:

1750a-581750b-60