User's Manual

Doc. No.
Rev.
Date
1.00
2011-12-08
Damm Cellular Systems A/S, Denmark
TETRAFLEX
®
V7.5 MANUAL - Dispatcher
TetraFlex® 7.5 Manual 3-57
3.5 DISPATCHER
3.5.1 General Description
The Core of the Dispatcher is the TetraFlexApi.dll. It contains all the core elements to be able
to connect an Application to the TetraFlex
®
system. As standard, the TetraFlexApi.dll is
delivered with a GUI (Graphical User Interface). This provides the complete Dispatcher
Application.
The TetraFlexApi.dll contains a fully documented API (Application Programming Interface)
TetraFlexApi.h file which allows the DAMM supplied GUI to be replaced with other GUI
applications provided from third party vendors. Thereby applications with other features and
in other languages are very easily implemented without any need to touch the core interface
to the system.
The TetraFlexApi.dll is delivered with a DAMM License Dongle to permit the use.
DAMM dispatcher from V7.30 and ahead requires a dispatcher entry in the dongle to be able
to start. Dispatcher from V7.40 and ahead requires a Microsoft .NET Framework and MS
SQL Compact database to be installed. This is valid for the DAMM dispatcher only, not for
any third party application.
The TetraFlexApi.dll is intended to be used on a Windows XP or Windows 7 platforms.
Any Node (Base Station, Gateway node etc.) of the TetraFlex
®
system can have an
Application Gateway activated, and each gateway can handle several simultaneous
application connections. The connection from the application to the system is done with
standard IP protocols (TCP/UDP) to the external (WAN) side of the node, and the application
can be located anywhere provided a standard IP connection to the node’s external WAN side
is possible.
The TetraFlexApi.dll configuration includes a list with one or several IP addresses of
Application Gateways. The TetraFlexApi.dll will scan through the list and try to register with
the first IP on the list, if found the scan is stopped, otherwise an attempt to register with the
next IP entry in the list is made (like a mobile scanning through its frequency list). The
registration occupies an SSI position. A PIN-code Authentication is added to prevent other
applications to register with same SSI. This allows redundant gateway connections and
allows the application to be moved to new locations without any reconfiguration.
The TetraFlexApi.dll supports a.o. to display the DAMM Dispatcher Phonebook with all
subscribers belonging to its own Home Organization and all Associated Organizations.
The phone book is an extract from the TetraFlex
®
subscriber register which is automatically
uploaded to the dispatcher using its own dedicated multicast address. This means that the
home organization subscriber register can be maintained from the dispatcher provided
access has been granted in the subscriber register.
Dispatcher functions include Individual-, Group- and Broadcast calls, monitoring of all active
calls including individual simplex and duplex calls, sending and receiving SDS, adding DGNA
groups, performing discreet and ambience listening etc. Additional features are planned to be
added in coming releases. For further information regarding future features, see the Feature