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DEFINITYEnterpriseCommunicationsServerandSystem75andSystem85
Terminals and Adjuncts Reference
555-015-201
Issue 11
December 1999
Data Modules
21-51The DEFINITY High Speed Link
21
Tests
The DEFINITY HSL supports the following tests and maintenance features:
■ Self-test
■ Local loopback
■ Data loopback
■ Remote loopback (V.54 and AT&T proprietary protocol)
■ Remote loopback with self-test
■ DCP looparound test
■ DDS latching/non-latching loopback
Connectors
The following connectors are located on the rear panel of the HSL:
■ RS-366/RS-232 (user must provide interface cable)
■ V.35 (user must provide interface cable)
■ LINE (cord shipped with set)
■ POWER (for single installations, power is provided by a separately ordered
stand-alone power supply — PEC 21625; for rack mounted installations,
power is included with the Z77A Data Mounting — PEC 21626)
Other Physical Features
Mounting Options
The HSL can be used as a stand-alone unit. It can also be installed in a Z77A
multiple-mount rack.
Color Options
The DEFINITY HSL is available in misty cream only.
Capabilities
The basic features and capabilities of the DEFINITY HSL are:
■ DCP operation up to 5,000 feet from the switch
■ Supertwist LCD and three push-buttons for displaying status, setting
options, controlling tests, storing telephone numbers, originating and
manually answering calls
■ Two LEDs for power, incoming calls, data mode, test mode and fault
indications
■ V.35 internally timed, synchronous interface for 56 kbps half duplex
operation, 56 kbps full duplex operation, and 64 kbps full duplex operation