Enhanced Bridge

Easy interoperability

Allows interoperation with and migration to/from foreign systems

Communicate across networks

Enables group calls across organizations

Easy migration

Supports soft migration from analog to digital TETRA networks

Reduced load on air interface

Pure IP setup means TETRA and virtual modems can be placed anywhere

Bridged communication – the traditional DAMM way

Group communication is ensured using one radio modem per group. Using radio modems, DAMM TetraFlex networks can be connected to TETRA networks from different manufacturers and even networks operating
in different frequencies or technologies. Using this traditional group bridging setup, terminals remain in their own networks, but can engage in group voice communication with terminals from a foreign network.
Additionally, this setup allows group SDS in TETRA.

Bridged communication – the enhanced way

The DAMM TetraFlex Enhanced Bridge also enables individual communication of terminals to/from foreign TETRA networks. The system is set up to detect when a terminal from the foreign network migrates to
or is switched on within the DAMM network. Via a TETRA modem, a virtual subscriber is established in the foreign network using the same ISSI number. The modem assignment is handled within a table in the DAMM TetraFlex Enhanced Bridge software and is based on priorities and vacancies.

Maximum flexibility and user friendliness
A terminal will be deregistered in the DAMM system as soon as it returns to the foreign system to which it belongs or when it is switched off within the DAMM network. This means that the virtual subscriber which had been allocated to it will be freed up for use by another terminal.

The registering and deregistering process that happens when the terminal migrates between the networks is a smooth process, which will not be noticed by the user. The terminal interface will look the same to
the user, and all operations will remain unchanged.

Benefits of an IP network
Since all connections to the DAMM TetraFlex network are pure IP, the TETRA modems and virtual TETRA modems can be placed anywhere and thereby be distributed to reduce the load on the air interface in the
best way.

Additionally, the DAMM IP network works according to the TETRA standard and is thus independent of the feature set and software status of the existing system – this is superior to any standard ISI solution available on the market.