TETRA combines the features of mobile cellular telephony, fast data communications and the workgroup capabilities of mobile radio.

A measure of the reliability and range of functions of the TETRA standard is that it has already been adopted by many public safety and emergency organisations.

The technology behind TETRA creates new standards of network service and functionality at a cost-effective price. It gives you 'press-to-talk' instant call set-up for individual and group calls as well as the expected added-value features found in any advanced mobile network.

TETRA's packet data transfer operates at up to 28.8 kbps. This, together with the Short Data Service (text and numeric messaging), provides the fastest and most flexible mobile data transfer capability available.

Advanced TETRA technology delivers excellent voice quality which is especially impressive in noisy industrial environments and in-car, hands-free operation.

TETRA is environmentally friendly too. A low operating frequency allows Dolphin to achieve national coverage with far fewer base stations than existing mobile networks.

The TETRA Memorandum of Understanding (MoU) was established in December 1994 to create a forum which could act on behalf of all interested parties, representing users, manufacturers, operators, test houses and telecom agencies. Today the TETRA MoU represents 58 organisations, from 19 countries.