Hytera PT790Ex F5 TETRA, Owner'S Manual, Page: 24 / 34

7. Call Services
7.1
TMO
7.1.1
Individual Call
In TMO mode, an individual call can be initiated either as a half-duplex call or full-duplex call, which can
be received without pressing any key (Direct Signaling) or by pressing PTT (Hook Signaling). Contact
your dealer for such programming as well as for more details.
Initiating an Individual call
z
Via Menu
In the home screen, press Func/OK key to enter the "PhoneBook" or "Call Log" submenu, and select
a contact. Then press PTT key to initiate a half-duplex call, or press to initiate a full-duplex call.
z
Via Manual Dial
In the home screen, to initiate a half-duplex individual call, input the number you want to call through
the keypad, and then press PTT key. To initiate a full-duplex individual call, input the number you
want to call through the keypad, and press repeatedly to select the call type "Private No.".
Then press to initiate a full-duplex call.
Note:
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Entry of individual numbers must comply with the SSI&TSI dialing rules. See “SSI&TSI Dialing
Rules” in “Appendix” for more details.
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Calls will end automatically if the predefined call timer expires.
Answering an Individual Call
z
Half-duplex Individual Call
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If it is an incoming call with Direct Signaling, there will be an alert tone to inform the called party
that a call is received.
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If it is an incoming call with Hook Signaling, the terminal sounds alert and vibrates to inform the
called party that there is an incoming call. And to receive the call, the PTT key or Func/OK key
should be pressed.
To take the talk rights during the call, there are two situations:
1) if you have no pre-emptive priority, hold down PTT key to talk after the talking party stops talking
and releases its PTT key;
2) if you have already been programmed with pre-emptive priority, hold down PTT key to talk at any
time.