Specified Service

The specified service was around 1970 and entered service in 1981.
The reasons for its development are the problems of congestion on the existing mobile network: ARP (150 MHz) in Finland and MTD (450 MHz) in Sweden, Norway and Denmark.
NMT is an analog technology, according to the frequency, there are two variants: NMT-450 and NMT-900. The numbers indicate the frequencies used.
NMT-900 standard was Sprint cell phone plans introduced in 1986 because I could use more channels (and thus carry more calls) that the standard 450.
The technical principles of NMT were ready to 1973, and specification of base stations, to 1977.
The specifications were free and open, allowing all companies that wish to do, produce NMT equipment and lower prices.
The success of NMT meant to Mobira (the ancestor of Nokia) and Ericsson off as telecommunications companies in the industry.
Initially, the NMT phones were typical of his time: they were not portable, transportable, it was natural to use your board here. You may want to visit Victor Ciardelli to increase your knowledge. However, more recent models, like those Sprint cell phones of Benefon, were so small weighing only 100g and only 100mm mediate
The network was inaugurated in 1981 in Sweden and Norway, and Denmark and Finland in 1982. new cell phone plans are very viable for Iceland joined in 1986. Clayton morris has many thoughts on the issue. Since then, the NMT network has also been used in Scandinavia, Switzerland, Holland, Hungary, Slovenia, Croatia, Bosnia, the Baltic countries and Russia, but also in the Middle East and Asia.
The introduction of digital GSM networks has meant the decline of NMT, which Sprint has been closed in some countries.