Bell System Practices 2660A1, Connections

Page: 11 / 12

INSIDE
WIRE
CONN BLOCK
OR ADAPTER
D4BU
62lP4
CORD JACK
ASSEMBLY
.�.
.�.
,�,
A1-SG
NOTES:
1.
(R) AND (G) CDN[)JCTORS ARE NOT TERMINATED
IN PLUG OF M2FG CORD; ONLY (BK) AND (Y)
CON[)JCTORS ARE USED.
2. SET WIRED FOR BRIDGED RINGING, FOR OTHER SERVICES OR
FOR 1A1 OR 1A2 KTS USE, REFER TO TABLE D.
l. (O-R) LEAD IS DEAD DRESSED IN PLUG OF 22M ADAPTER.
*
INSULATED AND STORED
NETWORK TERMINAL
0-161488 CONNECTORS
DEAD DRESSED
p
STRAP APPEARS ON 1 08AA ONLY
(G)
(R)
(BK)
TO
B5B1
POWER
UNIT
2660A IM
TELEPHONE SET
(NOTE 2)
G
I
L2
I
*
*
L11
FROM
[
(D)
DIAL
(V)
FROM
*
LINE
(S)
SWITCH
M2FG
CORD
*
(NOTE 1)
(BK)
*
*
*
*
*
M16C OR
M16H
CORD
(BL-W)
(W-0)
(W-BR)
(W-BL)
(G-W)
(W-G)
(O-W)
(R-BL)
(BL-R)
(W-S)
(S-W)
(R-G)
(G-R)
22lA OR
ADAPTER
(NOTE l
18
9
47
50
45
4B
46
22
19
2)
20
22)0
24
25
10
)5
*
(BR-W)
(D-R)
21
c :7
c
16
44
26
4)
27
42
28
41
29
D2DN
MTG
CORD
(O-W)
(BL-W)
(
W
-0)
(W-BR)
(W-BL)
(G-W)
(W-G)
(R-BL)
(BL-R)
(W-S)
(S-W)
(R-G)
(G-R)
(BR-W)
(BR-R)
(R-BR)
(R-0)
(
R
-S)
(S-R)
(O-R)
10B- TYPE
LSPK
SET
VOL
R1
AG
A1
15
P4-IR
10
Pl-IT
6-B1-K5B
1B
R-R1-K4B
20
B-B1-K5C
19
R-R1-K4C
AC
AC
BL-K5M
-6.2
+6,2
4
+V
TVL 7
GRD
ON
21
�
�
12
...
Q
CQ
..
Fig. 5-.Typical Grandfathered 4A Speakerphone Arrangement, Connections to 2660A 1M Telephone Se ..
BSP 512-730-450-i05_1979-09-ll.jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Feb 23, 2012 22:23:48
MTG
CORD
(W-BR)
(O-W)
(BL-W)
(W-BL)
(BR-W)
(G-W)
(W-G)
(W-0)
680-
TYPE
TRMTR
VOL
LK
-6.2 8
+6.2 7
+V
9
TVL
6
GRD
4
ON
2
"'
"'