DESCRIPTION
The DS2282 completely controls the Facility Data Link (FDL) as described in the Bellcore document TR–TSY–000194 (Extended Superframe Format Interface Specification – December 1987) and the ANSI document T1.403–1989 (Carrier to Carrier Installation – DS1 Metallic Interface). It also implements the protocol that is described in the AT&T publication TR 54016 (Requirements for Interfacing DTE to Services Employing ESF – 1986/89). In addition it provides a number of important performance parameters involved in monitoring T1 lines such as Errored Seconds, Severely Errored Seconds, and Unavailable Seconds.

FEATURES
• Fully implements the FDL message format as described in the ANSI document T1.403–1989
• Fully implements the maintenance message protocol described in AT&T TR 54016 (1986/89)
• Provides high–level monitor counts, namely:
    – Errored Seconds
    – Severely Errored Seconds
    – Unavailable Seconds
• Important counts are stored in nonvolatile memory
• Works in conjunction with the DS2283 Enhanced T1 Line Card Stik or DS2180A T1 Transceiver
• Simple serial port used to retrieve information and control operation
• Can be used without an external controller
• Connects to a standard 30–pin Single In–Line connector
• Single +5V supply