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Device
Device – construction
The two-part housing of ExResistTel consists of an electrostatically
conducting compressed material into the top portion of which a stainless
steel front plate is inserted. A cut-out closed with a sight glass in the
front plate, is arranged over the display of the telephone.
A trough for incorporating cast electronic modules, as well as a connec-
tion compartment into which up to four leads can be introduced, is built
into the box shaped lower part. The upper part with keypad and display
section is compressed onto the lower part along with an intermediate
circumventing gasket with the help of four screws and seals off the in-
ternal space.
Variant ExResistTel ZB notes -------------------------------------------------------
ExResistTel ZB is a variant of the telephone that has neither a display
nor a keypad and can be used in centralised operation applications
(ZB). Differing from the identical handling of incoming calls, the ZB
variant is passive during outgoing calls. The private branch exchange
used is responsible for dialling or establishing a voice connection, which
should be configured accordingly if required.
Apart from the display and keypad, the variant ExResistTel ZB has the
technical data of the standard variant ExResistTel at delivery. All keys,
display and setting dependent statements in the operating manual do
not necessarily apply to the ZB variant. The operation with a headset is
also not possible. For a better overview, the use of an explicit identifica-
tion such as "not applicable for the ZB variant" of all affected passages
has been avoided.
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