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BELL SYSTEM PRACTICES
SECTION 502-580-405
AT&TCo Standard
3,
Issue
November 1975
SERVICE
500L/M AND 500LM/MM TELEPHONE SETS
1.
GENERAL
Reissued to add
telephone set
500LM/MM
1.01
(modular), Fig.
4.
NOTICE
Not for use or disclosure outside the
Bell System except under written agreement
Page 1
Printed in U.S.A.
502-580-405-i03_1975-11-0l. jpg
BSP
Scanned by Frank Harrell, {Cowboy Frank) Castle Rock, Colorado Feb
04,2012 12:09:24
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Summary of Contents for Bell System 500LM/MM
- Page 1 BELL SYSTEM PRACTICES SECTION 502-580-405 AT&TCo Standard Issue November 1975 SERVICE 500L/M AND 500LM/MM TELEPHONE SETS GENERAL Reissued to add telephone set 500LM/MM 1.01 (modular), Fig. NOTICE Not for use or disclosure outside the Bell System except under written agreement Page 1 Printed in U.S.A.
- Page 2 SECTION 502-580-405 425E LINE 7-TYPE (MD) TER� G3-TYPE SWITCH RINGER NETWORK H ANDSET (NOTES OR 9-TYPE MTG CORD STRIP (NOTES I, DIAL (BL) RING (R) A (BK) AI (Y) (BK) .r� ( w) (S-BK) (S - R) NOT£S: I. SET WIRED r011 1 AI 011 IA2 WITH BRIDGED RINGER. TO PROVIDE 4.
- Page 4 SECTION 502-580-405 C4 -TYPE D48J G3-TYPE 4228A OR LINE SWITCH YP E MTG CORD HANDSET RINGER 425E NET. (NOTES 4 AND 6) TYPE DIAL (NOTES 1,2, 3,5, (BL) (BK) (G) OR (BL) RING (II) (BR) ( Y ) (BK) (BK) (II) (II) (BK)
- Page 5 SECTION S02-580-405 LINE TYPE (MD) 4228A OR D4BU 623D4 C4-TYPE 625A LINE-\IIRE S\IITCH OR 9-TYPE 425 E NET. JACK RINGER MTG,CORD CONN,BLK (NOTES 4 AND 6) DIAL (NOTE 8) (NOTES I ,2, R lNG (BK) (BK) (BK) I. SET WIR(O fOR OR IA2 KTS WITH INDIVIDUAL {BRIDGED) RINGING.
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