Bell System Practices 220 Identification, Installation, Connections, And Maintenance page 3

Fig. 4-H4DU Handset Cord
Telephone Set
shown in Fig. 5. The LED equipped TOUCH-TONE
dial handsets can be identified by the square dial
buttons.
The 226A and 2226A handsets contain an
2.06
amplifier which provides up to 20dB of
receiver gain for customer's with impaired hearing
or use in noisy locations.
When an LED-type hand telephone set is
2.07
provided, instruct the customer that during
the time a TOUCH-TONE button is depressed the
dial light will be extinguished and that the
rotary-type dial light will flicker during the run
down operation of the dial.
For tip party with identifying ground when
2.08
the LED-type hand telephone sets are
provided, it will be necessary to open the handset
and make connections as indicated in paragraphs
3.04 and 3.05.
Ordering Guide
2.09 Basic Handsets:
• Set, Telephone, Hand 220C-t
• Set, Telephone, Hand 220AL-t
BSP S02-303·102-i0l_l979-l2-03.jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado
Installed in Hand
Feb 07,2012 13:25:57
ISS
Fig. 5-220C, 220AL, and
Identification Stamping (LED)
• Set, Telephone, Hand 220AM-t
• Set, Telephone, Hand 226A-t (for persons
with impaired hearing or noisy location)
• Set, Telephone, Hand 2220C-t
• Set, Telephone, Hand 2220BM-t
• Set, Telephone, Hand 2226A-t (for persons
with impaired hearing or noisy location)
2.10 Replaceable Components:
• Lamp, 51B or 53B (use 53A for replacement)
• Cover, Dial (Fig 1 and Table B)
t Refer to Table B for color suffix.
2, SECTION 502-303-102
226A Hand Telephone Set
Page 3