23
GP300 Portable Radios
DTMF Telephone Interconnect
DTMF Telephone Interconnect
(Not Available on 2 Channel Models)
Dual Tone Multiple Frequency
(DTMF) tones are encoded
through the optional numeric
keypad for access to the land-
line telephone network and
for remote control operation.
DTMF Telephone Interconnect
1.
Press and hold the PTT but-
ton.
2.
Press the desired numeric
digits on the DTMF keypad.
As long as the PTT button
is held while the digits are
pressed, the corresponding
DTMF tones are transmit-
ted.
3.
Alternatively, press the
[PHN] button on the front of
the radio to activate the
numeric keypad for DTMF
"live-dial" transmissions.
The radio automatically
keys and sends digits, stay-
ing keyed for a programma-
ble amount of time to wait
for new DTMF digits.
4.
Once the DTMF tones are
transmitted, press the PTT
button to transmit normally,
without sending PTT-ID.
NOTE
After 7 seconds of neither transmitting nor
receiving, the radio automatically resets to nor-
mal operation.
5.
To return to normal operation at any time during the
DTMF sequence, press the [PHN] button.
[PHN]
[MEM]
P1
P2
GP300_owners.book Page 23 Thursday, August 7, 1997 9:49 AM
