15
DTMF Digit Grabbing
Dialing a Number from the Call Log
The call log is a list of phone numbers for the last 10
calls that the test set made or received. If you make or
receive a call from the same number more than one
time, the number shows only one time in the list.
To dial a number from the call log:
1
Connect the test set to a working telephone line.
2
Press M, press D to put the flashing cursor next
to Call Log, then press M again.
3
Press C or D to put the flashing cursor next to
the number you want to dial.
4
Press P. The test set goes off-hook, then dials
the number.
DTMF Digit Grabbing
The test set lets you capture DTMF (Dual-Tone Multi-
Frequency) tones generated on a telephone line. This
feature is useful when you suspect that the customer’s
equipment is not generating proper DTMF signals.
The test set detects tones for A through D, 0 through 9,
*, and #.
To use the Digit Grabbing mode:
1
Connect the test set to the Tip and Ring of the line
that is connected to the customer equipment.
2
Press Q.
3
Press M, press D to put the flashing cursor next
to Digit Grab, then press M.
4
Put the equipment into tone dialing mode, then
take it off-hook.
5
Dial a number on the equipment. The number
shows on the test set display.
6
Verify that the number on the display is the same
as the number you dialed.
7
To exit Digit Grabbing mode, press M, or press
P then Q, or turn off the test set then turn
it on again.
Visual ANAC Mode
Note
Visual ANAC mode is for service provider use
only. Visual ANAC is not available in all regions.
A visual Automatic Number Announcement Circuit
(ANAC) gives the DTMF tones of the telephone number
of the line. In visual ANAC mode, the test set
automatically goes into mute mode and shows the
number on its display. If the test set is not in visual
ANAC mode, the ANAC speaks the number with a
digitized voice.
To get a visual response from an ANAC:
1
Connect the test set to a working telephone line.
2
Press P.
3
Press R $. The display shows Dial ANAC.
4
Dial the ANAC number.
After you dial the ANAC number and get a response,
the phone number of the line pair that the test set is
connected to is shown on the display. If the ANAC
response is more than 10 digits, the display shows the
last 10 digits. If the ANAC does not support visual
ANAC mode, it speaks the number with a digitized
voice.
If you do not press
R $ before you dial the ANAC
number, the ANAC gives a digitized voice response.
You can also use the speed dial function to get a visual
ANAC response. If you put the ANAC number into
location 9 in the Call Phonebook, the test set goes into
visual ANAC mode and dials the ANAC number when
you press
R 9.
If you always want a digitized voice response when you
use speed dial for an ANAC number, put the number in
one of the other speed dial locations (1-8).
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