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PRACTICE 512-6261-200
CHART
I
OPERATION TESTS
Note:
This procedure tests all the operating features of an
installation.
If
a test cannot be completed
satisfactorily. refer to the Fault Location Guide (Chart 2).
STEP
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Page
10
ACTION
Depress
ON
key momentarily.
Rotate VOLUME control
clockwise.
Dial first digit of test centre number.
Complete dialing of test centre number.
Lift handset.
Hold ON key depressed. replace handset.
release ON
key.
Ask test center to talk. then hold MUTE key
depressed for 20 seconds and talk.
Ask test centre to talk and continue talking
while holding ON key depressed for 20
seconds.
Request test center to call back after call
terminated, depress OFF
key.
Depress line pickup key if telephone set is so
equipped. Depress ON key
momentarily.
Operate HOLD key if telephone set is equipped
with it.
Operate line pickup key if telephone set 1s
equipped with it.
Lift handset.
Replace handset.
Switch from internal to external microphone if
applicable. Dial test center number.
VERIFICATION
Indicator lamp lit. dial tone heard on loud-
speaker.
indicator lamp extinguished.
Volume of dial tone
increases.
Dial tone silenced. indicator lamp lit.
Ringing heard. test centre answers.
Speech transferred from loudspeaker to hand-
set. indicator lamp extinguished.
Indicator lamp lit. Speech transferred from
handset to loudspeaker on release of
ON
key.
Speech heard on loudspeaker while key de-
pressed.
Test center does not
hear
speech.
Operation normal after test.
Indicator lamp lit but no speech
heard by
either
party. Operation normal after test.
Indicator lamp
extinguished.
No speech on
loudspeaker. Ringing heard when test center
returns call.
Ringing stops. indicator lamp lit.
Speech
heard
on
loudspeaker.
Speech no longer heard from
loudspeaker.
indicator lamp lit. line-hold feature (
flashing
line lamp) operates in telephone set.
Speech heard on loudspeaker. line-hold feature
releases in telephone set.
Speech transferred from loudspeaker to
hand-
set. Indicator lamp extinguished.
handset
operation normal.
Call
terminated.
Speech transmission normal.
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