Bell System Practices 851 Identification, Installation, Connections, And Maintenance page 19

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NOTES'
1. CONNECTIONS FOR Pl8 RINGER SHOWN . RINGER CONNECTIONS FOR SETS EQU IPPED WITH
PIA RINGER SAME AS Pl8 EXCEPT (S) AND (S-R) LEADS ARE INSULATED AND STORED.
(8L) LEAD REMOVED FROM CURRENT MODEL PIA RINGERS.
2 . LATER 8518(MO) TELEPHONE SETS ARE EQUIPPED WITH GlA6 HANDSET llrliCH IS WIRED
DIRECTLY TO THE TELEPHONE SET. EARLY PROOUCTION 851-TYPE TELEPHONE SETS WERE
EQUIPPED W ITH A G12A HANDSET USING A PLUG-ENDED CORD .
ISS 8, SECTION 503-601-101
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l. 851 BM TELEPHONE SETS ARE SH IPPED WITH G15A HANDSET AND THE H40U HANDSET CORD.
4. FOR MANUAL SERVICE MOVE (G) FROM F TORR TERMINAL AND MOVE (W) FROM R TO GN
TERM INAL. DIAL REMA INS ON SET.
OP-
DIAL PULSE
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OFF NORMAL
• I NSULATEO AND STORED
Fig. 26-851 BT, 851 B, and 851 BM Telephone Set Connections (Sheet 2 of 2)
Page 19