Valsts valodas centra izstrādātie transporta, infrastruktūras un sakaru termini

Konteksts: [..] Tone dialling and calling line identification facilities are normally available on modern telephone exchangesand can therefore increasingly be provided at little or no expense [..]
Avots: Directive 2002/22/EC of the European Parliament and of the Council of 7 March 2002 on universal service and users' rights relating to electronic communications networks and services (Universal Service Directive)