T2020 Operator's Manual 13The radio will then proceed to switch to the programmed call diversion channel andtransmit the sequence that has been set up for the call diversion without indicatingthat an incoming call has been received (no ringing).After executing the diversion transmission, the radio will revert to the channel it wason prior to the call diversion.4 Making A Call To A Radio In Diversion ModeYour T2020 radio can be programmed to respond to a diversion status report whenmaking a call. When it detects the diversion status in the acknowledge from theradio it has called, it will display "-DIVERT-" to indicate that the call has beendiverted. It then proceeds to switch to the programmed diversion channel.To Send DTMF Tones (DTMF Option Fitted)The keypad on the T2020 may also send Dual Tone Multi-Frequency tones (consult yourTait dealer to see if this option is fitted to your radio). This gives you the ability to dialtelephone numbers if your radio network has an interconnection to the Public SwitchedTelephone Network (PSTN) or to send tones as control codes to remote devices.1 To enter the DTMF mode, observe which of the function indicators below thedisplay is currently illuminated (i.e. ! , ! , ! , ! or !!!! ) andpush that key to de-activate the function. This leaves the radio in the DTMF dialmode, with the last number dialled in the display.2 Pressing will redial the number in the display.3 Dialling a new number may be done digit by digit or as a complete number, asfollows:- To transmit the tone with each key-press (i.e. 'live'), press the PTT switch onthe microphone as you dial. (Your radio may be programmed so that you needonly press the number key.) The TX indicator appears in the display as youdial.- To set up a complete sequence of digits, push each number key in turn withoutpressing the PTT switch (although your radio may be programmed to transmitthe tones 'live' anyway). Each number appears in the display, and when thesequence is complete it may be transmitted by pushing the key. (Evenif the digits have been transmitted 'live' they will be retransmitted as a group.)