Posts by Diver Fred

£2B in UK taxpayer cash later, and still no Emergency Services Network

Re: A Little Bit of History

Tetrapol is France only system. Rest of Europe uses TETRA.

TETRA was in use in the UK nationally from around 1992/3 - The Dolphin network. Nokia technolgy. Aimed at companies who needed a radio network that work county or nationally; even provided telephone calls.

Re: Purchase

The whole of the TCCA and members are working towards an ESN like system. It's Long Term Evolution release 12 onwards.

The UK's woke vanity idea is moving slowly to use a similar standard.

Re: A Little Bit of History

Airwave Network reliability - much better even in big cities and remote rural areas; the two most difficult areas of any country to get good radio coverage.

The amount of testing that went on ensured that.

Re: A Little Bit of History

Nokia - a full national working network from day one.

Motorola - took several years to get the national network working.

Nokia - honest company, at time of signing admitted they didn't have the Air interface security working, was under development.

Motorola - less honest company, at time signing reported SO security was availble... Unfortunately took several years to implement.

Re: Why ho TETRA on the whole of the underground ?

There is. Spent weeks travelling on and walking around public areas and much of the private areas to confirm the coverage in the network.