| 摘要 |
In communication systems for a plurality of types of communication (voice, teletex), a separate special service memory (SDS1A, SDS1B-SDSnA, SDSnB) is provided for the type of communication. Stored in the said memory in each case for all special communication services occurring in the case of this type of communication is an individual item of information on their operational enabling or inhibiting. <IMAGE>
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