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Communication system, particularly a telephone communication system

  • US 5,195,128 A
  • Filed: 12/06/1991
  • Issued: 03/16/1993
  • Est. Priority Date: 12/21/1990
  • Status: Expired due to Term
First Claim
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1. A communication system having at least one controller with at least one first central memory for storing communicated messages, the communication system also having at least one of internal terminal equipment, of at least one connection to external terminal equipment and of at least one connection to central equipment of another communication system, comprising:

  • tone means that forms at least one of user prompting/alerting tone signals and control information signals for message exchange protocols that the controller calls in from the tone means for transmission to the at least one of the internal terminal equipment of the communication system, the external terminal equipment and the central equipment of another communication system, the tone means being formed in the at least one first central memory that stores at least one of the alerting tone signals and control information signals for message exchange protocols, the tone signals and control information signals being stored in the first central memory along with the messages and being called in by the controller in the same manner as the messages are called in by the controller.

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