Karel MS48 Installation & Maintenance Guide
Edition 3.2
14
Figure A-12
The dimensions of DSS80 are 16 cm x 22 cm x 6.5 cm and the weight is 0.7 kg.
II.1.D. DSS40 DIRECT STATION SELECT MODULE
The DSS40 Direct Station Select Module, which is used as an add-on module for
OP48(-H) Consoles and LT48(-H) Feature Phones, consists of a BDP (Busy
Display Panel), a 2-Character Display and a programmable keypad including 40
multipurpose keys and 40 corresponding LEDs.
Each key may be programmed to activate two facilities, which may be calling an
extension, accessing a line or activating a system feature. The corresponding LED
of each key shows the status of the facility assigned to the primary function of the
key.
The BDP (Busy Display Panel) together with the 2-Character Display shows the
states of 40 extensions and 12 lines as well as some system features.
DSS40 can be used not only with the MS48 system, but also with the other KAREL
systems of bigger capacities. That is why DSS40 handles 4-digit physical numbers
for extensions, such that the 2-Character Display is used to show the most
significant two digits whereas the LEDs on the BDP are used to indicate the least
significant two digits. In this way, the two digits in the 2-Character Display may be
interpreted as “page numbers”, and there are 3 pages with numbers 11 to 13 that
covers all the extensions in the KAREL systems to which DSS40 can be
connected. It is also possible to navigate forward and backward among the pages,
via the “+” and “-“ keys on DSS40 keypad. However, when DSS40 is connected to
MS48 system, it is enough to observe the first page (page 11) covering the
extensions 1111 to 1150. The states of 12 lines as well as system features are
displayed on all pages.
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