Ever Expanding

A flexible range of products
to match all of your central monitoring & management system requirements.

Our core enterprise products are predominantly designed & developed by Viatech personnel to ensure we can meet all of your specialised requirements efficiently and effectively.

Please feel free to contact us if you have any queries.

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In Development

Some of our development projects:

  • In-Field Workforce
  • CCTV & Security Integration
  • FDMA & TDMA Convergence
  • RFID & Biometric Systems
  • Sensor Node Networks
  • WiFi Mesh Networks

Radio over IP & Trunking

Radio over IP

Radio over Internet Protocol, or RoIP, is similar to VoIP, but integrates two-way radio communications rather than telephone calls in to a networked system. From the system point of view, it is essentially VoIP with PTT (Push To Talk). To the user it can be implemented like any other radio network.

With one side connecting to the radio network the other side could be almost anything from another two-way radio, dispatch consoles, fixed line telephone or a modern softphone on your PC, such as Skype , PDA, smartphone, or some other communications device accessible over IP.

RoIP can be deployed over private networks as well as the public Internet. It is extremely useful and effective in Land Mobile Radio systems used by public safety departments and fleets of utilities spread over a broad geographic area to enable cross-linking and connection of multiple networks and repeater sites.

  • Centralised communications through an operator headset
  • Linking Digital and Analogue Radio Systems
  • Linking multi-brand Radio Systems
  • Linking multiple talkgroups and regions (Trunking)
  • Patching to multiple systems
  • Conference calling through multiple mediums
  • Linking multi repeater networks across the country or internationally
  • Allowing a 'Disaster Centre' to integrate all services

The use of LMR (Land Mobile Radio) equipment in both mobile and handheld forms, can be problematic for desk-bound users such as dispatchers, supervisors and other users in large public safety agencies and energy/utilities. Also Emergency Services Command Rooms are typically staffed with representatives from many different public safety agencies and other local government officials, each with a different radio. Such Control Rooms are more effectively equipped when the radios for each of the different constituencies are made available in the center via RoIP at each user's computer, rather than via a handheld radio that may be out of range, difficult to hear and out of batteries throughout the emergency.

Finally, RoIP by its nature is interoperable, as once any device whether radio, telephone, computer or PDA is made part of the voice network enabled by IP, it is irrelevant what type of technology it utilizes. RoIP systems routinely combine VHF, UHF, fixed-line telephones, mobile telephones, SATCOM, air-to-ground, and other technologies into a single voice conversation. This makes it especially valuable to the much-documented problems with communications interoperability.

Trunking

A trunked radio system is a computer-controlled two-way radio system that allows sharing radio frequency channels among a large group of users. Instead of assigning, for example, a radio channel to one particular organization at a time, users are instead assigned to a logical grouping, a "talkgroup". When any user in that group wishes to converse with another user in the talkgroup, a vacant radio channel is found automatically by the system and the conversation takes place on that channel. Many unrelated conversations can occur on a channel, making use of the otherwise idle time between conversations. A control channel coordinates all the activity of the radios in the system. The control channel computer sends packets of data to enable one talkgroup to talk together, regardless of frequency.

The primary purpose of this type of system is efficiency; many people can carry many conversations over only a few distinct frequencies. Trunking is used by many government entities to provide two-way communication for fire departments, police and other municipal services, who all share spectrum allocated to a city, province or other entity.

ViaTech’s Products section on this website gives a brief breakdown of what we can offer and the many ways that a solution can be created for you. ViaTech can research and develop your requirements and present you with the findings.

ViaTech also field tests and ensures that a fully functioning system is ready for company-side rollout before expensive mistakes are made.