Specifications

85Digital Key BX, Digital 400 & Digital 1000 Functional Description
SynopSys
The SynopSys system combines the control, switching,
signaling and peripheral subsystems into the Basic
card, enabling a SynopSys system to operate with just
one card.
All data and audio switching in the system uses digital
signaling. The speech and call processing tones are
converted from analog to digital signals and from
digital to audio signals in the DIGITAL stations.
Additional telephones and outside lines can be added
using expansion cards and options can be added using
the various option cards.
The expansion cards connect directly to ports on the
Basic card. A flat cable from the Basic card to the
expansion cards provides a power connection and
carries data and audio signals.