Bell System Practices 660A1 Connections page 6

SECTION 5 12-730-450
APPARATUS
623P4
Jack
Assy
Line
Switch
Dial
Ringer
Strap
M16C or M16H
Adapter
Cord
(Note 2, 3)
Strap Between
Net. Term
Note 1.
Terminals on network unless otherwise noted.
Note 2.
Insulate and store unused leads in adapter cord.
Note 3.
If housing must be notched to accommodate the adapter cord, refer to Section 503 · 100·100
for notching information.
Note 4.
4A speakerphone system is not des igned for tip party identification service.
Insulate and store.
*
t
Use D-161488 connector.
Page 6
BSP 512-730-4 50-i05_197 9-09-06.jpg
Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Feb 23,2012
2660A1M TELEPHONE SET EQUIPPED WITH M1 A OR M1 B RINGER­
MODIFICATION FOR 4A SPEAKERPHONE (NOTE 3)
WIRE OR LEAD
LEAD
COLOR
DESIG
R
T
A1-SG
A (BK)
R1 (BL·W)
A1
(W-BR)
AG
(W·O)
T1
(W·BL)
I R (G·W)
IT
(W·G)
LK
(O-W)
•
TABLE Dt
INDIVIDUA L
OR BRIDGED
1)
(NOTE
(R)
(G)
(Y)
(BR)
(S) Connect to ( O ·W) adapter cord lead
(G)
(G)
Connect to (0) dial lead
Connect to
Connect to (S) line switch lead
(G)
22:22:21
TIP PARTY
WITHOUT
RING PARTY
I DENT.
(NOTE 1)
(NOTE 1,4)
L2
G
L1
*
*
G
TBI-7 to G
L2
L1
*
t
(V) t
dial lead
*
t
A to L1