AT&T System 85 manual Definity High Speed Link, Physical Description

DEFINITY High Speed Link

DEFINITY High Speed Link

The DEFINITY High Speed Link (HSL) is a data service unit that allows data equipment to access the data services of System 75 and System 85 and DEFINITY switches. It is used where the integration of voice and data is not required. The High Speed Link supports synchronous data transmission at speeds of 56 and 64 kbps, and provides a link to high speed data networks.

The DEFINITY High Speed Link provides access to various switched and dedicated (private) data networks, including Group 4 Fax, Video Teleconferencing, LAN Interconnect, and Cluster Controller/Front-End Processor Connections.

Physical Description

Dimensions

Note: The following dimensions are approximate.

Width = 7 inches

Depth (front and rear) = 9-1/4 inches

Height = 1-3/4 inches

Weight = 1 pound 5 ounces

Lights

POWER/TEST light

This red light goes on steadily when there is power to the High Speed Link; winks during all tests; and flashes with the DATA light for line fault indication.

DATA light

This green light goes on steadily indicating a data call is in progress; flashes when receiving an incoming call; and flashes with the POWER/TEST light for line fault indication.

Display

This 16-character LCD display shows the start-up sequence, status, option information, and test information.

5-55