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DTMF Signalling
TMP {DuaJ Tone Mutti Frequency)
signalling means
you can
use yeur phone lo perform Thanking
by phone" and uliNze other $ervloes,
Automatic DTMF
Tones must be bearti when
you press the ^eys.
it cifcks or nothing is heard,
you must sefect Speciai
Function No. J. Key Clicks,
DTMF Tones or Sitent Key¬
pad and lutn the DTMF
tones on rDTMF BURST or
DTMF CONTtnous}^ Refer to
the chapter Spedel Func~
UoffS-
Pressing Ihe numefio keys
- 9,
▼ * (star) and #A (hash) during a
call will aufOfnatically send the oome^
spondir^ DTMF signaJs.
FI you have chq^n Ihe Buret optionn
a burst of stgriat will be sent wheri you
press a numeric Key, With the Corv
linuDus
option, a signal wBl last as
long as a numeric key is held downi.
The kays ▼ * and #A riab'e
dual futrctions when a call is
in progress. They serve as a
voiume cofitfio/, Too,
Pressing ▼ * (down} or
itA{up)momentariiy wriide^
crease or irtcrease the ear-
piece or ioudspeaker volume
by one step
Too send a * Qra#^ you
must hold down the key for
two seconds. Not unftf then
¥dit the # or # be eenf.
Repeating the DTMF slgnela:
The characlers enterBd and sent re¬
main In the risplay. You can send them
again by pressing M (Mode), lallgwed
by Ser^.
OD
(g)
The characters in lihe display are cor^
vened lo DTMF signaJs and sent euto-
malJcally, one character al the time.
ff you riava entered more
than 32 digits, the fl/sr digits
wiif not be sent.
DTMF Mode
H you
Often
serKi the characlers #
ar>d # you might find rt a nuisance
having Id hold down
T
# and #A
Keys, Then you should
use
Ihe tollow'
Ing nrffithod.
ft is irreievant whether dicks,
tones or nothing is heard
when you press the keys.
t. Call the
desired
number and wail
until Ihs call has been connected.
2. Maks certam Ihat nothing is shown
in Ihe numeric field ol the display.
H necessary, erase it using ihe C
(Clear) key,
3. Press M, followed by Send, to
switch to DTMF mode.
®(Z)
The message DTMF ON comes
on In the display.
37
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