Karel ST26, Техническое описание и руководство пользователя

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LINE CONNECTION
The ST26 is a digital telephone set which, due to its structure, requires 2-wire
connection. Parts list of ST26 includes the necessary cable group that is required for
connecting it to the exchange. That cable group includes a console connection box and
a cable with RJ11 jacks at both ends.
Wires of a cable extending from a digital-extension card of a DS-series exchange are
separated in groups of two, with respect to the order. The cables in groups of two are
connected disregarding the direction of the connection points 3 and 4 of the RJ11.
Only a single ST26 can be connected to each of the groups of two. Number of ST26s
that will be connected to the exchange and accessories using the external data line of
the exchange should not exceed 25 in total.
The ST26 cannot be connected to two-wire interfaces of exchanges of other brands.