PowerTrunk DT-400, Руководство пользователя

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User Manual
28
en
8.2 Individual calls
An individual call is a call between 2 users. No other user will listen to your call. It can be
made to numbers on the TETRA network (private calls) or to numbers on the external
telephone network (PSTN or PABX telephone calls).
MDT-400 / DT-410 will enable you to make the following individual calls:
-
Semi-Duplex with direct signalling : The caller has permission to speak first. It is not
possible to speak and listen simultaneously.
-
Semi-Duplex with “hook” signalling : The receiver must answer (unhook) first. It is not
possible to speak and listen simultaneously.
-
Duplex : The signalling is hook (the called party must answer first). It is possible to speak
and listen simultaneously. It is not necessary to press PTT to speak.
To make a private semi-duplex call:
- Enter the number of the person you wish to call or select it from the phone book.
- With the soft key ‘ Mode’ (lower right-hand part of the screen) select the type of call you
wish to make (PRV, PSTN, PABX).
-
If the call you wish to make is direct signalling, press the PTT button and speak directly.
When you wish to stop speaking, release the button. Then your interlocutor can carry out
the same operation: press PTT and talk.
- For semi-duplex calls with Hook signalling, start the call by pressing the AUX button on
the hand-held microphone. This option must be enabled by programming. The user must
accept (unhook) the call first. When the call has been established, the user who wishes to
speak must keep PTT pressed.
- There are two ways to finish any type of private call: By pressing the AUX button on the
hand-held microphone or by the soft key
‘Hang’ .
If Discrete Mode is active ( ), a semi-duplex incoming call with direct signalling will be
converted to hook signalling.