AT&T BELL SYSTEM Touch-A-Matic 870A1 Identification, Installation, Connections, Operation, And Maintenance page 7

1SS5, SECTION 501-164-201
(1) Check operation of line sensing circuit per the
following tests. (Refer to Part 5 for operation. )
In case of failure, refer to Table H (Trouble Analy-
sis).
(a) With telephone handset on-hook, momen-
tarily depress RECORD button. RECORD
lamp should light.
(b) Lift telephone handset off-hook. RECORD
lamp should be extinguished.
(2) Using the telephone set dial, manually dial a
known number to check that the telephone set
operates correctly.
(3) For the adjunct dial, perform dial speed test
as follows.
(a) Obtain dial tone.
(b) Dial code number for dial speed test.
(c) After dial tone is heard again, manually
dial digit O.One of the following audible sig-
nals will indicate how the dial meets the re-
quirements of the test.
(1) Audible ringback: dial speed satisfacto-
ry.
(2) Rapidly interrupted dial tone: dial speed
fast.
(3) Slowly interrupted dial tone: dial speed
slow.
(4)
With the telephone handset on-hook, use the
dial on the adjunct to record known telephone
numbers, storing consecutive digits of the num-
bers in sequential memory locations. Fill all mem-
ory locations except LAST NUMBER DIALED
and the location immediately above it [paragraph
5.01 (4) through (7)].
(5) Automatically dial the telephone numbers
stored in Step (4) by momentarily depressing
the memory buttons in the same sequence in which
the digits were recorded. Verify that the digits
thus dialed produce the expected telephone num-
bers.
(6) Go off-hook and use the dial on the adjunct to
record a known telephone number into mem-
ory location immediately above LAST NUMBER
DIALED location [paragraph 5.01 (4) through (7)].
(7)
Momentarily hang up handset and then auto-
matically dial the number recorded in Step (6).
(8) Go off-hook and from the adjunct, manually
dial a known telephone number.
Note: If a pause for second dial tone is re-
quired, dial the access digit(s). After the RE-
CORD lamp relights, depress the WAIT button
then dial the telephone number.
(9) Momentarily hang up handset and then auto-
matically redial the number [dialed in Step
(8)] by depressing the LAST NUMBER DIALED
button.
Note: The dial should stop dialing if it
reaches a stored WAIT input. Depress the
LAST NUMBER DIALED button again and the
remaining digits should be dialed.
K
R
The battery and power unit must be
connected a minim urn of five min-
utes before doing Step (10).
(10) Momentarily disconnect the power unit (for
5 to 10 seconds). After reconnecting power
unit, momentarily depress memory buttons in
same sequence in which digits were recorded in
Step (4). Verify that the correct telephone number
is dialed.
(11) Dial the appropriate code for ring-back to
test the telephone set ringer.
(12) If equipped with one-touch calling option, (D-
180493 Kit of Parts and speakerphone), and
with set in on-hook condition, depress the memory
button used in Step (6). The speakerphone should
turn on, dial tone should automatically be detect-
ed, and the stored number should be automatically
dialed.
2870A1 Dial
3.06
Check the 2870A1 (TOUCH-TONE service)
dial as follows.
(1) Check operation of the line sensing
circuit per
the following tests. (Refer to Part 5 for opera-
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