Bell System Practices 660A1 Connections page 4

SECTION 512-730-450
WIRE OR LEAD
APPARATUS
Line
Switch
Ringer
Straps
SCA
Dial
(Note 1)
Add Straps
(M1W cord or
equivalent)
D10R
Mounting
Cord
(Note 2)
Note 1.
Replace BRA dial with SCA dial (order separately).
Note 2.
Replace D6AF mounting cord with D10R mounting cord (order separately).
Note 3.
Terminals on network unless otherwise noted.
Note 4.
4A speakerphone system is not designed for tip party identification service.
*
Insulate and store.
Current color code.
MD color code.
Page 4
Scanned by Frank Harrell, (Cowbo y Frank) Castle Rock, Colorad
U ABLE Bt
660A1 TELEPHONE SET EQUIPPED WITH C4A RINGER­
MODIFICATION FOR 4A SPEAKERPHONE
LEAD
COLOR
DESIG
(BR)
(Y)
(W)
[S-BR]
(R)
(BK)
(Y)
(Y)
( W)
(W)
(BL)
(G) or (BL)
R (BL-W)
T
(W-BL)
A1
( O -W)
T1
(W-0)
P4 (G-W)
P3
(W-G)
A-A G
(BR-W)
LK
(W-BR)
P1 (S-W)
P2
(W.S)
INDIVIDUAL
RING PARTY
OR BRIDGED
(NOTE 3)
[ S-G ]
[S-W]
L1
F
TBil-1 to 41-type dial, terminal 1
TBil-2 to 41-type dial, terminal 2
41-type dial, terminal 6
41-type dial, terminal
41-type dial, terminal 2
41-type dial, terminal P1
41-type dial, terminal P2
o Feb 23,2012 22:21:5 0
TIP PARTY
WITHOUT
I DENT.
(NOTE 3)
(NOTE 3, 4)
*
TBI-P2
c
L1
TBI-P2
TBI11
TBII 2
TBII 3
TBII 4
TBII 5
TBII 6
TBI-L1
F
TBI-P2
1
*
TBI-L2