Download Print this page

Bell System Practices 660A1 Connections

Telephone sets connections speakerphone system 4a

Advertisement

Quick Links

BELL SYSTEM PRACTICES
AT
TCo Standard
&
1.
GENERAL
1.01
Refer to Section 512-700-100 for detailed
information
speakerphone system.
1.02
This section is reissued to:
Add information to identify registered and
typical grandfathered arrangements
Add safety information for the 85B1 power
unit
Delete 4A speakerphone and key telephone
system wiring figures for 660A1, 2660A1,
and 2660A1M telephone sets
Delete key telephone system modifications
in Tables A through D.
1.03
This section provides information necessary
to
modify and connect the 660A1 (MD),
2660A1 (MD), and 2660A1M telephone set to provide
speakerphone service (Fig. 1 and 2).
1.04
Rotary dial telephone sets equipped with an
8RA dial must be equipped with an 8CA dial
when used with 4A speakerphone.
of off-normal contacts on 8CA dial shall connect to
same set terminals as P3 and P4 leads from
speakerphone.
1.05
The D6AF or D4BT mounting cord furnished
with 660A1 or 2660A1 sets must be replaced
by a D10R mounting cord (ordered separately).
addition the telephone set must be modified per
Tables A, B, or C.
1.06
The housing
2660A1M telephone set must be notched to
accommodate the M16C (MD) or M16H adapter cord.
Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Feb 23,2012 22:21:03
BSP S12-730-450-i05_1979-09-0l.jp g
660A 1, 2660A 1, AND 2660A 1M TELEPHONE SETS
SPEAKERPHONE SYSTEM-4A
on
components
of
The second set
on earlier
versions of the
Not for use or disclosure outside the
Bell System except under written agreement
CONNECTIONS
Refer to Section 503-100-100 for notching information.
In addition the telephone set must be modified per
Table D.
the
4A
2.
CONNECTIONS
A.
223-Type Adapter
2.01
Cords from the 108-type loudspeaker set,
680-type transmitter, and 85B1 power unit
are installed in proper receptacle of the 223A (MD)
or 223D adapter.
securely to assure proper mating of connectors.
B.
108-Type Loudspeaker Set
2.02
Loudspeaker set and transmitter must be
placed a minimum of one foot apart.
C.
680-Type Transmitter
2.03
Transmitter must be at least two feet from
the transformer or any ac powered device.
D.
85B 1 Power Unit
2.04
Power shall be supplied by connecting power
unit as shown in Fig. 3 through 6.
2.05
Use an ac power outlet (not under control
of a switch) located as close as possible to
the system being installed. A retaining clamp will
be shipped with power unit and should be mounted
to the ac receptacle to hold power unit securely
to prevent accidental loss of power (Fig. 1 and 2).
In
Caution:
same power supply for the card dialer
and the
2.06
The power unit should be located less than
125 feet from 108-type loudspeaker set when
NOTICE
Printed in U.S.A.
SECTION 5 12-730-450
Issue 5, September 1979
The cover must be fastened
Never
attempt
to
4A
speakerphone system.
use
the
Page 1

Advertisement

loading
Need help?

Need help?

Do you have a question about the 660A1 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Summary of Contents for Bell System Practices 660A1

  • Page 1 The D6AF or D4BT mounting cord furnished to the ac receptacle to hold power unit securely with 660A1 or 2660A1 sets must be replaced to prevent accidental loss of power (Fig. 1 and 2). by a D10R mounting cord (ordered separately).
  • Page 2 SECTION 512-730-450 using gauge wire •or 85 feet when using 26 retaining clamp on outlets where cover gauge wire.. Refer to Section 512-700-100 for mounting screw holds the duplex outlet detailed information on power supply applications. in the box. 2.07 The M2FG cord is furnished as part of the Warning: Care...
  • Page 3 ISS 5, SECTION 5 12-730-450 660A1 TELEPHONE SET EQUIPPED WITH C4B RINGER­ MODIFICATION FOR 4A SPEAKERPHONE TIP PARTY WIRE OR LEAD INDIVIDUAL RING PARTY WITHOUT OR BRIDGED LEAD (NOTE 3) APPARATUS COLOR I DENT. DESIG (NOTE 3) (NOTE 3, 4)
  • Page 4 SECTION 512-730-450 U ABLE Bt 660A1 TELEPHONE SET EQUIPPED WITH C4A RINGER­ MODIFICATION FOR 4A SPEAKERPHONE TIP PARTY WIRE OR LEAD INDIVIDUAL WITHOUT RING PARTY OR BRIDGED I DENT. LEAD (NOTE 3) APPARATUS COLOR (NOTE 3) (NOTE 3, 4) DESIG...
  • Page 5 ISS 5, SECTION 512-730-450 2660A1 TELEPHONE SET EQUIPPED WITH M1A OR M1B RINGER­ MODIFICATION FOR 4A SPEAKERPHONE WIRE OR LEAD TIP PARTY INDIVIDUAL RING PARTY WITHOUT OR BRIDGED I DENT. LEAD (NOTE APPARATUS CO LOR (NOTE 1) (Note 1, 4) DESIG •...
  • Page 6 SECTION 5 12-730-450 • TABLE Dt 2660A1M TELEPHONE SET EQUIPPED WITH M1 A OR M1 B RINGER­ MODIFICATION FOR 4A SPEAKERPHONE (NOTE 3) TIP PARTY WIRE OR LEAD INDIVIDUA L WITHOUT RING PARTY OR BRIDGED I DENT. LEAD (NOTE 1) APPARATUS COLOR (NOTE...
  • Page 7 ISS 5, SECTION 512-730-450 LINE CORD 841050818 RETAINING lOB-TYPE CLAMP LOUDSPEAKER SET Fig. 1-.Typical Grandfathered 4A Speakerphone System Arrangement, 660A 1 (MD) or 2660A 1 (MD) Telephone Sets Using 223A (MD) or 223D Adapte ... Page 7 BSP 512-730-450-i05_1979-09-07.jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Feb 23,2012 22:22:37...
  • Page 8 SECTION 12-730-450 2660AIM TELEPHONE 8410�0818 108-TYPE RETAINING LOUDSPEAKER SET CLAMP Fig. 2-Registered or Typical Grondfothered 4A Speakerphone System Arrangement, 2660A 1M Telephone Set Using 223A (MD) or 2230 Adopter. Page 8 BSP 512-730-450-i05_1979-Q9-08.jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Feb 23, 2012 22:22:54...
  • Page 9 TO LINE 660AI TELEPHONE SET COHN BLK 223A Mt6C OR 223D DIOR ADAPTER MI6H CORD MTG CORD (NOTE 2) ( W -BL) TBI-LI RING ( B L-W) ( B L-W) A-AG (BR-W) ( W -0) TABLE A AND TBI-P2 Af-SG ( W -BR) (o-w) (W-BL)
  • Page 10 HONE 2660AI MI6C CORD MI6H RING Tl P CORD (W-BL) Tl P (BL-W) (Bl-W) ____ A-AG (W-0) (W-0) TABLE (O-W) (W-BR) FROM (w-G) (W-BL) DIAL (V) (BR-W) (G-W) (W-BR) (W-G) FROM (o-w) (5-W) LINE SWITCH SPARE (w-s) (R-BL) SPARE (G-W) (BL-R) (W-5) { BK I...
  • Page 11 M16C OR 22lA OR 22)0 INSIDE CONN BLOCK D2DN 10B- 680- D4BU 62lP4 2660A IM TYPE WIRE ADAPTER M16H OR ADAPTER CORD JACK LSPK TYPE TELEPHONE SET CORD (NOTE l CORD TRMTR ASSEMBLY CORD (NOTE 2) (W-BR) (O-W) (BL-W) .�. (BL-W) (BK) .�.

This manual is also suitable for:

2660a12660a1m660a1 md2660a1 md