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Managing bandwidth on demand for internet protocol messaging with capability for transforming telephony calls from one media type to another media type

  • US 6,628,666 B1
  • Filed: 03/30/1998
  • Issued: 09/30/2003
  • Est. Priority Date: 03/30/1998
  • Status: Expired due to Term
First Claim
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1. A method for assuring quality of service (QoS) for data network telephony (DNT) calls between agent stations each having a personal computer (PC) and a telephone, comprising steps of:

  • (a) connecting the PC at each agent station to a wide area network (WAN) and to the telephone at each agent station in a manner to allow both DNT calls at the agent station PC and conventional calls at the agent station telephone to be processed at the telephone;

    (b) monitoring bandwidth at the agent station on an existing DNT call between the two telephones at the agent stations over the wide area network (WAN);

    (c) comparing available bandwidth to a prestored threshold value;

    (d) in the event that available bandwidth is less than the prestored threshold value, informing at least one of the participants to the call of an impending switch from DNT to conventional PSTN; and

    (e) establishing a conventional telephone call at the agent station via a Public Switch Telephone Network (PSTN) between the telephones available to the participants in the DNT call, and terminating the DNT call.

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