Multikom IP • elvys.sk

To ensure backwards compatibility and interoperability with circuit-switched networks, Multikom IP is also equipped with a PCM interface, allowing integration with existing Multikom 2 system interface cards. The system was also designed to be easily expanded if a greater capacity becomes necessary.

The Multikom system uses the IP protocol, therefore all peripherals can communicate with it, e.g. digital dispatch consoles, local and remote radiotelephone controllers, VoIP telephony networks, and digital radio system networks (DMR, TETRA, NEXEDGE and others). If special codecs or increased capacity are required, an additional expansion card is used. The entire voice commutation and control takes places at the central unit level.

Special Expansion Cards

Multikom IP has expansion slot options to allow for new cards to be added when required, e.g. additional signal processor cards which increase system capacity or specialized codec expansion cards with built-in AMBE hardware codecs to allow Multikom IP to communicate with the DMR or NEXEDGE radio network infrastructures.

Special Expansion Cards

When designing the new control system, we set ourselves a core objective of maintaining full backward compatibility with the components and elements of our previous Multikom 2 solution.

The new control unit has been equipped with interfaces for voice signals (PCM) and the control bus (CAN), ensuring the option of connecting and controlling all interface cards known from the Multikom 2 system.

This offers a simple upgrade path for systems that run Multikom 2 and wish to include Multikom IP. We have designed things to ensure you can upgrade those systems while retaining older non-IP interfaces. Everything will work together smoothly.

ISDN telephony card
E1 cards for controlling base station sets
Control cards for local radiotelephones
Other interface cards used in the Multikom 2 system

Rear Panel of the Multikom IP Housing

Additional Features

**Patch / Interconnect** Set of direct connections between heterogeneous communication channels: radio-radio, radio-telephone, analogue radio – digital radio.

**Sharing resources** The possibility to share remote base stations within neighbouring systems.

**Voting** Radio network mode operating on a single, common fre- quency with automatic selection of the base station receiving the strongest signal.

Integration with External Applications

Among our customers’ frequent requirements is integrating external applications and having the possibility to access it through the dispatch console. A typical example concerns audio recording systems which record and store the dispatchers’ entire communication. Therefore, the console features a software module providing access to the most recent communication of any given dispatcher as well as the option of browsing older, archived communication and replaying or retransmitting when required.

Knowing that customers may use Multikom through external applications, we prepared an API that allows access to both the Multikom functions and also features of any integrated communication networks.

A practical example of this kind of use is applying the Multikom system in order to remotely turn on the Volunteer Fire Brigade alarm sirens using the SWD application of the Fire Brigade in Poland.