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Voice over internet protocol

  • US 6,999,431 B2
  • Filed: 02/17/2001
  • Issued: 02/14/2006
  • Est. Priority Date: 02/17/2001
  • Status: Expired due to Term
First Claim
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1. A method for supporting a real time communication for and between both a pulse code modulation (PCM) telephone network and an Internet protocol (IP) telephone packet network in an enterprise including the steps of:

  • providing a gateway responsive to calls from a calling party on either the IP telephone network or the PCM telephone network for answering calls;

    obtaining directory prompt messages from an IP gateway;

    responding to DTMF or voice recognition signals from the calling party and searching a directory database for a closest match of a name;

    playing the directory prompt messages to the calling party and audibly announcing the closest match;

    negotiating an acceptable name with the calling party and prompting the calling party for acceptance of the closest match;

    looking up an address translation in the directory database in response to the name selected by the calling party; and

    attempting the real time communication to a called party utilizing the address translation corresponding to the name, if required.

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