tie line


noun Telecommunications.

a line that connects two or more extensions in a PBX telephone system.
a private telephone channel, leased from a telephone company, that connects two or more PBX systems.

Nearby words

  1. tie clasp,
  2. tie down,
  3. tie in,
  4. tie into,
  5. tie into knots,
  6. tie one on,
  7. tie one's hands,
  8. tie plate,
  9. tie plug,
  10. tie rod

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for tie line

British Dictionary definitions for tie line

tie line


a telephone line between two private branch exchanges or private exchanges that may or may not pass through a main exchange
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012