Karel ST30, Technical Reference And User'S Manual, Page: 53 / 54

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ACCESSORIES
DSS25–28 DIRECT STATION SELECT
MODULE
DSS25–28 modules are designed as Direct Station Select modules for ST25/ST30
telephones. They facilitate extension/line/feature access by single key touch. Those
keys are also used to monitor status of extensions/lines by their LED functions.
Digital DSS25–28 Direct Station Select Module consists of key pad. There are 28
programmable keys and a LED for each key. Functions of the keys can be followed by
related LED. All of the keys are usually used to assign accessing codes, and there is
not any necessity about programming on module.
For more information, please look at DSS 25-28 Technical Reference and User Guide.