Bell System Practices AT&T 502 Reference page 15

EXCLUSION
SPEAKERPHONE
TPA 483440
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Fig. 8-511F ond
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PLUG LEAD OESIG
MTG
CORD
!NOTE t)
[ : �
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CIRCUIT
[
:
2
LINE 2
25
3-TYPE
I
CIRCUIT
00 I
I
P3 ('I-SRI
I
:: : : (BR-V)
(Y-BR)
44
I
SIGNAL
GRO IBR-YI
CIRCUIT
19
I
BL OR BZ IR-GI
33
·
H
Telephone Set Connections, 2-Line Pickup With Exclusion on Line 1, Signaling, and
Speakerphone (Fadory Wired)
NOTES:
EXCLUSION KEY
(NOTE 3)
I T E
. ��� DE _
2. CONNECTIONS SHOWN PROVIDE FOR RINGING ON LINE
LINE 2, CONNECT (51 STRAP AND IBKI RINGER LEAD TO TERMINALS
3. ���N�C���:�����:;
N E ·
; � ' � N ;
6
4 . TO SILENCE RINGER PERMANTLY, REMOVE IBK) RINGER LEAD FROM TERMINAL
;rn�;uB��� � :�SD i;�:[
5
17 TO 16 . CONNECT BUZZER ACROSS TERMINALS 16 AND 19
6 LINE SWITCH SEOUENCE,HANOSET
be-MAKES
de-MAKES
SETS ARE FACTORY WIRED FOR BRIDGED RINGING SERVICE. CONNECTIONS
1.
FOR HIB RINGER SHOWN. IF HIA RINGER IS USED WIRE AS
FOLLOWS
(BK) TO 2 OF TERM. STRIP
(Sl TO K Of NETWORK
(S-RI TO A OF NETWORK
(R) TO I OF TERM STRIP
REMOVE lSI STRAP FROM A OF NETWORK AND I OF TERM. STRIP.
IV-Gl
IS)
(W-01
0
(BR)
2
,,,
IBLI
{W)
19
LINE KEY
D ��: � CAL EXC EPT E QUIP PED WIT H 02 0 J
N ;
O ��� /�ci
T��= �g
FOR RINGING ON
L
Y
PROVIOE FOR EXCLUSION ON LINE I FOR EXCLUSION ON
I
o , ND (51 EXCLUSION SWITCH LEADS TO TERMINALS
;��;���� ���: .
1
CHANGE (G-R) MOUNTING CORD LEAD FROM TERMINAL
REMOVED;
ob-BREAKS
fQ-BREAKS
OP- DIAL PULSE CONTACTS
01 AL OFF -NORMAL CONTACTS
ON-
425E NETWORK
G Ll
0 0
GIAR OR G3-TYPE
TYPE HANDSET
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