National Telesystems has installed many TiE telephone systems throughout the Dallas and Fort Worth DFW Metroplex.  We continue to stock parts for and provide service on many Tie Telecommunications telephone systems.  Below are some of the TiE telephones we refurbish, stock and service.
Click here to request parts or service.

This is also known as a SWB Delphi or Delphi 6.
Color: White (Also Black, but rare.)
These phones discolor easily and may appear yellow.
NOTE: These may or may not have a call directory with a dark plastic flip-cover along the top of the phone.

This is also known as a Meritor.  (Be careful- Other TIE phones are labelled as Meritor that do not work on the 612 or Modkey!  Please confirm the Model Number.)
Color: Ash (Also Black, but rare.)

This is also known as a UltraKey.
(Be careful- Other TIE phones are labelled as UltraKey that do not work on the 612 or Modkey!  Please confirm the Model Number.)
Color: Ash (These phones discolor easily and may appear yellow.)
Note the distinctive beveled edge at the top of the phone.

Also known as a Businesscom 16.
Colors: Ivory and Black (which is very rare).
Note: Is difficult to see in picture, but has a column of 3 buttons on each side of the button label.

This is also known as an Econ-O-Key.
Color: Ivory