Bell System Practices 660A1 Connections page 9

660AI
TELEPHONE SET
TIP
TBI-LI RING
TBI-P2
Af-SG
Tl
II
P4
P3
LK
,I
,2
NOT ES:
1. (RI
AND (G ) CONDUCTORS ARE NOT TERMINATED IN PLUG
OF M2FG CORD; ONLY (BK) AND (Y) CONDUCTORS ARE USED.
2. (0-R) LEAD IS DEAD DRESSED IN PLUG OF 223A ADAPTER.
*
INSULATED AND STORED
T
NETWORK TERMINAL
+
TERMINAL ON 41-TY PE DIAL
§
DEAO DRESSED
f?
STRAP APPEARS ON 108AA ONLY
Fig. 3-.Typical Grandfathered 4A Speakerphone System Arrangement, Connections to 660A 1 (MD) Telephone
Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Feb 23,
BSP 512-730-450 -i05_1979-09 -09.jpg
TO LINE
RI
GRO
DIOR
MTG CORD
( W -BL)
( B L-W)
SEE A-AG (BR-W)
TABLE A AND
8
(o-w)
(w-o)
( G -W)
(w-G)
(w-BR)
(s-w)
(w-s)
TO 60 HZ
DIAL POWER SOURCE
IBV,
Set f
2012 22:23:15
44A
COHN BLK
Mt6C
OR
G P
MI6H CORD
Tl
N
( B L-W)
( W -0)
( W -BR)
(W-BL)
( G -Il)
( W -G)
(o-w)
( R -BL)
"
( B L-R)
"
(
(w-s)
"
( S -11)
"
( R -G)
[
*
I BK I
TO
85BI
(Y I
POWER
( BR·WI
UNIT
M2FG
CORD
(NOTE I)
* (O-R I
*
223A
OR 223D
ADAPTER
(NOTE 2)
49
47
50
45
48
46
22
19
1 7
c 3
3
26
4
e
27
42
e
28