Orion LBI-38888K manual Dtmf Overdial/Conventional Mode Telephone Interconnect

NOTE

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 radio is transmitting) and the caller can only be heard when PTT is released (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, answering 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 signalling 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 conventional 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 pthen following the selection mode rules.

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 sequence 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.

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