Specifications

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This document describes the Telrad DIGITAL family
of integrated telephone systems, including the
DIGITAL 1000 medium- and large-business system,
DIGITAL 400 and DIGITAL KEY BX small- and
medium-business systems and the SynopSys small-
business system. These telecommunications systems
provide a clear migration path from the smallest 13
ports, supporting four outside lines and nine telephones,
to the largest 1024 ports, supporting up to 255 outside
lines and up to 925 telephones.
All systems in the Telrad DIGITAL family provide
the latest in computer telephony integration (CTI)
including support for TSAPI- and basic or expanded
TAPI-compliant off-the-shelf, Telrad-developed, and
other applications. Each of these systems brings your
office into the era of full integration and simultaneous
transmission of voice and data. Combining advanced
technology with simplicity of operation, the DIGITAL
systems are capable of meeting your evolving
communication requirements for years to come. They
provide modularity and ease of expandability, with a
smooth migration path from the smallest system to the
largest.
Telrad DIGITAL family of systems was in the forefront
of integrating ISDN into the private exchange. Each
of these systems supports ISDN telephones and
terminals and both Primary and Basic Rate Interface
ISDN outside lines.
Telrad is introducing a new line of seven Avanti
telephones for the DIGITAL KEY BX, DIGITAL
400, and DIGITAL 1000 systems, including one model
with a 128 x 240 pixel graphic display. All telephones
with displays include softkeys that actively change
there function in accordance with call progress. Some
of these telephones can be expanded with DSS add-on
units and the addition of feature cards, like the data
cards or the voice recognition dialing card.
The SynopSys system uses the seven Telrad DIGITAL
telephone sets and the 36 button Add-on units. If you
upgrade from a SynopSys system to one of the larger
Telrad DIGITAL systems you can keep using the same
telephones for cost savings as you migrate to a larger
system.
DIGITAL KEY BX, DIGITAL 400, AND
DIGITAL 1000 SYSTEMS
The DIGITAL KEY BX, DIGITAL 400, and
DIGITAL 1000 systems provide optional ISDN Pri-
mary Rate Interface (PRI) and Basic Rate Interface
(BRI) cards to connect to outside and network lines.
With ISDN, your DIGITAL systems will be part of
the current communication revolution. ISDN (Integrated
Services Digital Network) access brings you to the era
of full end-to-end digital communications, providing
economical, enhanced services. The DIGITAL KEY
BX, DIGITAL 400, and DIGITAL 1000 systems are
compatible with Nortel, AT&T, and ETSI ISDN
standards.
The systems also provide Basic Rate Interface for
ISDN terminals for Internet access and video
conferencing. With a cost effective start-up
configuration of four outside lines and 16 stations pro-
vided by just two printed circuit cards, the DIGITAL
KEY BX system can grow to 96 extensions and 48
outside lines (a maximum of 128 ports combined). The
DIGITAL 400 system can grow to 254 extensions and
144 outside lines (a maximum of 384 ports combined),
Introduction