Telecommunications.
1. a line that connects two or more extensions in a PBX telephone system.
2. a private telephone channel, leased from a telephone company, that connects two or more PBX systems.
Telecommunications.
1. a line that connects two or more extensions in a PBX telephone system.
2. a private telephone channel, leased from a telephone company, that connects two or more PBX systems.
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012