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DUAL TONE MULTI-FREQUENCY (DTMF) FUNCTIONS (U.S.A./ CANADA ONLY)
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You can send DTMF tones by using the DTMF keys on
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the MC-53DM microphone. The keypad includes the
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12 keys found on a push-button telephone plus
4 additional keys (A, B, C, D). These additional keys are
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required for various control operations by some repeater
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systems.
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MAKING DTMF CALLS
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1 Press and hold Mic [PTT].
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2 Press the keys in sequence on the keypad to send
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DTMF tones.
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• The corresponding DTMF tones are transmitted.
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• Your transceiver remains in the transmit mode for
2 seconds after you release each key. So you can
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release Mic [PTT] after beginning to press keys.
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Autopatch
Some repeaters in the U.S.A. and Canada offer a
service called Autopatch. Autopatch allows you to
access the public telephone network by sending
DTMF tones. Some repeaters require a special key
sequence to activate Autopatch. Check with the
repeater control operator.
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Mic Keypad Confirmation Tones
When pressing the desired keys on the microphone
keypad, this function produces feedback tones for
your confirmation.
1 Press [MNU] to enter Menu mode.
2 Select Menu No. 28 (DT.MN).
3 Press [OK] , then turn the Tuning control to switch
the function ON or OFF (default).
4 Press [OK] again to complete the setting and exit
Menu mode.
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