CONTROL UNIT
( NOTE 3!
55 A
558
I N S I DE
W I RING CABLE
12
A I
0--
23
1 0
R l
0--
1 9
T l
0--
2 1
P 3
0--
30
P4
0--
5
AG
0-
1 0
GRO
0--
(NOTE 6)
4
M l
0--
1 4
- 1 5
M2
0--
13
P I
0--
2
Fl
0--
3
0--
29
19
AI
�
I
NOTE
4)
35
BL
0--
34
20
SP2
0--
33
SPI
0--
24
0-- -0
I
NOTE
5)
27
27
T F I
0--
36
36
TF2
0--
ISS
5,
SECTION
512-620-440
4 4A CONN BLOCK
!NOTE ()
BLOCK
NO.
I
I
9
LK
0
5
0
8
0
BLOCK
NO
2
I
2
7
3
0
8
(MD)
OR
20 120
6300
O R
6310
TEL
D I OR CORD
!NOTE 2)
SET TERM
( W-BR)
A
I
I
( BL-W)
Rl
2
( W-BL)
T l
( W
-
G
)
P3
I
I
IG-W)
P 4
1 2
I
W
-
0 )
AG
( O - Wl
LK
TRANSMITTER
T I I A
MOUNTING CORD
T7A
6 66A
6668
{NOTE 2)
( MD)
8
IBK)
IBK-0)
I BR-BL)
I
S-BK)
2
I
�
IWI
IBK-Sl
3
�
(BL)
I B L-Rl
2
-0
I
Y)
(G-Y)
7
-0
IRl
( 0 -BK)
5
-0
( G )
IY-Ol
9
6
-0
TO BUSY LAMP
760A
CONTROLLED BY
LOUDSPEAKER
SPEAKERPHONE
IG!
R2FK CORD
IR
I
NOTES:
)
,
CONNECTIONS SHOWN ARE USED WHEN CONTROL UNIT IS LOCATED NEAR
TEL SET, IF CLOSE ENOUGH, CONNECTING BLOCK MAY BE ELIMINATED
BY TERMINATING CORDS FROM TEL SET, TRMTR, AND LOUDSPEAKER
DIRECTLY TO CONTROL UNIT. WHEN CONTROL UNIT IS LOCATED AT
EQU I P!o4ENT, EXTEND SPEAKERPHONE LEADS THROUGH CONNECTOR CABLE.
2.
INSULATE AND STORE SPARE CONDUCTORS IN DIOR AND TIIA CORDS.
3.
EITHER THE 55B OR 55A
C
O
NT
RO
L UNIT MAY BE
USED
WITH THESE
TELEPHONE SETS. CONNECTIONS TO THE 55A CONTROL UNIT ARE THE
SAME WHETHER OR NOT THE UNIT HAS BEEN MOO IF
I
EO FOR "TOUCH-TONE"
•
4.
PLACE STRAP WHEN BUSY LAMP IS PROV IDEO.
5. CONNECT SPI LEAD TO TERMINAL
30
(ON 55B) OR TERMINAL
24
(ON 55A)
WHEN REDUCED LOUDSPEAKER VOLUME IS DES I REO.
6. CONNECT LOCAL GROUND.
t-NETWORK TERMI NAL
Fig.
7-.6300
or
6310
Telephone Set Connections Using Auxiliary Cord and External Transmitte ..
Page
9
SSP S12-620-440-i05_1979-07-09.jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Feb 16, 2012 23:00:34
