Page 1
BELLSYSTEM PRACTICES SECTION 502-580-408
AT &TCo Standard Issue 5, May 1977
SERVICE
500R/S AND 500SM TELEPHONE SETS
1. GENERAL TABLE A
1.01 Reissued to: LINE AND C4B RINGER CONNECTIONS
• Delete 500RM telephone set which was never wine raNG TIPPAR_
manufactured OR COLOR PARW NOiOmT
LEAD GROUND
• Add 623D4jack and D4BU mounting cord MtgCord (W-BL)
to 500SM telephone set (Fig. 2). in Set [G] F F
Strap from
G Term. on (G) E1 E1
Net. to
C4B (R) K K
Ringer (BK) G G
Mtg Cord [R] Ring Tip
at Conn (W-BL)
Block (G) Tip Ring
(Line Only) (BL-W)
* Only the optional mounting cord leads are shown in the
table. Connections for the remaining mounting cord leads
are shown in Fig. 1.
]Vote: To permanentlysilence ringer, refer to appropriate
ringer section in Division 501.
( ) Current color code
[ ] MD color code
(G-w)
[BR-G] Ring Tip
NOTICE
Not foruseordisclosureoutsidethe
BellSystemexceptunderwrittenagreement
PrintedinU.S.A. Page 1
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SECTION 502-580-408
LINE AND C4A RINGER CONNECTIONS
0 TABLE B 41
TIP PARTY
WIRE INDIV - TIP PARTY IDENT
OR COLOR OR RING NO IDENT GRD
LEAD BRIDGED PARTY GROUND 1000_'_[
Mtg Cord (W-BL) G F F F F
in Set [G ]
i
2650_
Strap from
G Term. on (G) F E1 El E1 El
Net.to
C4A (BK) G G G G B
(R) L2 L2 L2 K B
Ringer (S) K K K B K
(S-R) A A A B G
Line (W-S) Term. Term. Term. A of A of
Switch [S-BR] 2 2 2 Net. Net.
Mtg [R]
Cord at (W-BL) Tip Tip Ring Ring Ring
oo_n, [G]
(G-W) Ring Ring Tip Tip Tip
Block (BL-W)
(LineOnly) [BR-G ] Ring Ring Tip Tip Tip
Strap
from A
To L2 on (S) * * * * *
Net,
44A Conn
Block 1 to 6 1 to 6 2 to 6 2 to 6 2 to 6
Strap
Page 2
* Remove strap, if in place, when using C4A ringer.
( ) Current color code
[ ] MD color code
Note: To permanently silence ringer, refer to appropriate ringer section in Division 501.
Page 3
ISS 5, SECTION 502-580-408
LINE DI OP OR TERN. C4B RI NGER DIAL NETWORK G3-TYPE
WIRE DIOH (MD) STRIP (NOTES I AND 2) HANDSET
MTG CORD
(BK)
(R)
RI_ , _A
(G-W)IRI
STRAP _.__ (G)
r" LINE SWITCH L2 _)
RING _ ,
TI , (_ I
(BL-W) [BR-G] 3 {Y-S) IS-Y] b' _c' '
2
(w-s) [S-BR] "1-o'
(D_ DP (_(W-G) [BK] E2 (G) OR (BL) I (BL)
(G) IS-G] dve.. (W) IS-W] RR
(w-s)[BR-Y] B
g_ ON (w)
P3_ _)
e4_ _)
LK (S-W) EeL] _) 0
Ai ORSG-------- ®
AG_ "_
) (w-BR)[_] 6 (y)
(BR-w)[w] _ (y) :_
4 (s) [BL]
(O-W) [Y] El (Y) b--
(w-o)[BR-R] 5 (BR) )(c
(w-BR)Is]
/
(R) [S-R ] GN
(w) __
(BK) [S-BK] R
/
ON
_DC
F
LI
Q
NOTES: LEGEND:
I, SET WIRED FOR BRIDGED SERVICE. REFER TO TABLE A ( ) CURRENTCOLORCODE
FOR OTHER CLASSES OF SERVICE AND TO SILENCE RINGER. [ ] MD COLOR CODE
2. IF C4A RINGER IS USED, REFER TO TABLE B FOR ALL DP DIAL PULSE CONTACT
CLASSES OF SERVICE. ON DIAL OFF-NORNAL CONTACT
3. FOR CONNECTIONSTO SPEAKERPHONEREFER TO APPROPRIATE
SECTION IN DIVISION 512.
Fig, 1--500R/S Telephone Set--Connections
Page 3
Page 4
SECTION 502-580-408
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Page 4
4 Pages
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