eLTE3.1 Dispatch Platform
Product Description
Issue 04 (2014-08-06)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Page 42 of 46
10
Service Overview
10.1
Voice Trunking Services
No.
Service
Description
1
PTP call
PTP calls, or private calls, can be made between terminal users or between a
terminal user and a dispatching console user. PTP calls are full-duplex
communications. Only the two parties who participate in the PTP call can
hear each other.
2
Group call
Group calls are made between several terminals or between terminals and a
dispatching console. Group calls are half-duplex point-to-multipoint
communications.
3
Emergency call
Emergency calls are special calls with the highest priority, allowing
information to reach the called party within the shortest time.
4
Group scan
Group scan is used to search for groups for listening.
5
Floor preemption
During a group call, a higher-priority user can get the call floor from a
lower-priority user.
6
Forced call release
by the dispatcher
An authorized dispatching console can
forcefully
release a PTP call.
7
Time-limited call
The duration of a floor in a group call, a PTP call, or a call connected to a
PSTN user is configurable. When the time expires, a message will be
displayed.
8
Broadcast call
Broadcast calls are point-to-multipoint calls made by a dispatching console to
all members in a system.
9
Incoming/Outgoin
g call barring
Incoming calls or outgoing calls (including the interworking gateway
numbers) made to or from a user can be barred. Incoming/Outgoing call
barring affects only PTP calls.
10
Interconnection
and interworking
of different
systems
Users in a private network can make and receive PTP calls to and from
PSTN/PBX users and PLMN users, group calls to TETRA users and external
350 MHz ultra short wave stations.