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Pre-emptive Calling
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 (simplex or duplex call).
The feature allows to disconnect the on-going lower priority
call and to connect to the incoming higher priority call.
To place a PPC, see the Emergency Operation and Private
Call sections in the user guide.
The MTP850 Ex/MTP810 Ex will receive the call via speaker
or earpiece, according to the setting used when the PPC is
received.
Receiving a PPC is explained in the following paragraphs.
In the screens, <Any> in Use, refers to any of the non-
emergency voice calls: Group, Private, Phone, or PABX.
Receiving an Emergency Group Call during a Call
The MTP850 Ex/MTP810 Ex receives the Emergency Group
Call, drops the on-going non-emergency voice call, and
connects to the Emergency Group Call.
Receiving a Private PPC during a Call
If configured by your Service Provider, the MTP850 Ex/
MTP810 Ex receives the PPC, drops the on-going, non-
emergency, lower priority voice call, and connects to the
higher priority Private Call.
A PPC with lower or equal priority, will be dropped without
any indication to the called user and will enter the missed call
list.
<Any> in Use
Emgcy In Use
ID:David
Talkgroup 1
Optns
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