Bell System Practices TOUCH-A-MATIC 2872A 1M Manual page 38

SECTION 503-603-1 01
TOUCH•A•O<A TIC
TELEPIIONE SET
6-!!UTTON l l NE KEY
POWER
NOTES:
MOUNTING
CORD
828 CONNEC T ING
BlOCK
08S·87
CORD
AZ58 CABLE
" - - - - TO KEY TELEPHONE SYSTEM
( NOTE 2 1
1, STRAP NEC<SSARY Otf.. Y IF SET IS ALSO
EQ UIPP£0 Wi ll< DI AL TONE DETECTOR TO
PROV I DE ONE -TO UCH CALLING OPT IO N,
2. I F POWER IS P!l OV I OED THROUGH KEY CABLE,
USE ( BR-V ) PAIR FOR 85 -TYP£ POH!'R UNI T
AN D STRAP 24 TO AC1 AND 49 TO AC2 O N
828 CO t.I'<ECTING BLOCK .
Fig. 11-Biock Diagram-2872A 1M or 2872A2M Telephone Set Using 4A Speakerphone
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