Filter
Top Products
require DTMF (Dual-Tone Multi-Frequency) access dig-
its. Overdial operation can also be used to initiate a
telephone interconnect call via DTMF signalling if a dial
tone has already been accessed on the system. This is
the method that is used for making a telephone intercon-
nect call while operating in the conventional mode but will
also function in trunked mode if a dial tone is directly
accessible. Telephone numbers and other number se-
quences for overdialing can be stored in the phone list
when programming the radio or stored by the operator in
the first ten phone list entries. These numbers are ac-
cessed by pressing then following the selection
mode rules.
The following steps are required to dial these numbers:
1. Follow the procedure in Sending A Telephone In-
terconnect Call (Trunked Mode Only) to establish
a connection to the telephone system or consult the
system administrator for the procedure to access a
dial tone on the trunked or conventional system.
2. Overdial numbers are transmitted using either
method below:
METHOD 1: Press and hold PTT while entering the
overdial number sequence from the key-
pad. This method sends DTMF tones dur-
ing individual, telephone interconnect,
trunked group or conventional channel
calls. Anytime the PTT button is pressed
and held, the keypad is enabled for DTMF
entry.
78