“Extension” - is the extension of the telephone line (PBX) or the Centrex system. It works as an association and allows calling to certain telephone sets without the necessity of dialing the telephone number, but only by dialing a short combination of digits, reaching the desired subscriber.
Relsoft Bg Com Ltd.
Intertel Telecommunication is established in 2001 and offers one of the most modern services in the field of telecommunications - IP Voice Call - carrying voice over Internet. The company stays behind and works with the best technologies which are tested
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