Pre-Emptive Calling (Ppc) - Motorola TETRA MTM800 Manual

The console operator will then try to set up a private call with
you, within a pre-determined period of time after successful
call pre-emption.
Only emergency calls are allowed within a pre-determined
period of time after successful call pre-emption (during BUP
wait state).

Pre-emptive Calling (PPC)

Pre-emptive calling is particularly useful when you need to
speak urgently with a user whose terminal is busy in a non-
emergency voice call.
A Pre-emptive Priority call (PPC) is either an Emergency
Group Call or a Private PPC (half-duplex or full-duplex call).
The feature allows to disconnect the on-going lower priority
call to connect to the incoming higher priority call.
The Service Provider configures the priority of the PPC. Its
highest priority is emergency priority.
To place a PPC, see the Emergency mode and Private mode
sections in the user guide.
The MTM800 will receive the call via loudspeaker or earpiece
of the telephone style handset, according to the setting used
when the PPC is received
For call alert, see settings in the Tones menu option (page 88)
Receiving a PPC is explained in the following paragraphs.
In the following screens
emergency voice calls: Group, Private, Phone, or PABX.
22
refers to any of the non-
<Any> in Use
.