NMT: Nordic mobile telephony with international roaming
NMT: telefonía móvil nórdica con itinerancia internacional
- Date
- 1981 · confidence high
- Place
- Stockholm, Sweden
- Credited to
- Nordic telecom administrations (Swedish Televerket, Norwegian Televerket, Telecom Finland, Denmark)
- Field
- Communication
⚠️ Disputed: the sources disagree.
What it is
An automatic cellular network of Sweden, Norway, Denmark and Finland, which began service in 1981 and allowed the same phone to be used across all participating countries. It was the first with international roaming.
In Japan, NTT launched the first commercial automatic cellular network in 1979 (Tokyo). NMT was the first with roaming between countries. The Nordic countries opened their networks between 1981 and 1982.
What it led to
- a model of multinational standardisation that led to GSM
- the Nordic mobile phone market and Ericsson and Nokia
- the spread of mobile telephony in Scandinavia in the 1980s