Dtmf Overdial/Conventional Mode Telephone Interconnect - Ericsson EDACS ORION Operator's Manual

4. To terminate the call, momentarily press the
The ORION radio is capable of simplex (one-way) conversation only.
The caller can only hear the radio if the PTT button is pressed (the ra-
dio is transmitting) and the caller can only be heard when PTT is re-
leased (the radio is receiving).
DTMF Overdial/Conventional Mode Telephone
Interconnect
Once the radio has established a connection to the public telephone system,
it may be necessary to "over-dial" more digits to access banking services, an-
swering machines, credit card calls or other types of systems that require
DTMF (Dual-Tone Multi-Frequency) access digits. Overdial operation can
also be used to initiate a telephone interconnect call via DTMF signaling if a
dial tone has already been accessed on the system. This is the method that is
used for making a telephone interconnect call while operating in the conven-
tional mode but will also function in trunked mode if a dial tone is directly
accessible. Telephone numbers and other number sequences 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 accessed by
pressing then following the selection mode rules.
p
The following steps are required to dial these numbers:
1. Follow the procedure in Sending A Telephone Interconnect 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 as follows:
METHOD 1: Press and hold PTT while entering the overdial number se-
quence from the keypad. This method sends DTMF tones
during individual, telephone interconnect, trunked group or
conventional channel calls. Anytime the PTT button is
pressed and held, the keypad is enabled for DTMF entry.
METHOD 2: Press
the selection mode rules to call up a stored number from the
NOTE
to enter the overdial select/entry mode and follow
p
button.
c
37