Bell System Practices 220 Identification, Installation, Connections, And Maintenance page 2

SECTION 502-303-1 02
NOTE·
22208 AND 2220BM
HANDSETS HAVE
ROUND DIAL
BUTTONS
Fig. 2-2220C Hand Telephone Set
and 2226A handsets are equipped with jacks and/or
adapters which accept the small (mini) plug for
the H4DU (modular) handset cord (Fig.
The 220A, 220AM, 2220B, and 2220BM
2.05
handsets are equipped with a dial light which
requires an external power source (2012A or 2012C
Page 2
BSP 502-303-102-i02_1979-12-02.jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado
Fig. 3-2226A Hand Telephone Set
transformer) or equivalent 6-volt supply. The 220C,
220AL, 226A, 2220C, and 2226A handsets are
4). equipped with light emitting diodes (LED) for dial
illumination. Power to light these dials is supplied
by CO battery over the incoming line and no local
power is required.
handsets are furnished stamped LED at location
Feb 07, 2012 13:25:37
315-TYPE
AMPLIFIER
VOLUME
CONTROL
RECALL
SWITCH
NOTE
226A HAND SET
SAME, EXCEPT
HAS ROTARY DIAL.
The 220C, 220AL, and 226A