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Methods and apparatus to route a communication session directly to a voicemail mailbox

  • US 8,879,545 B2
  • Filed: 12/31/2007
  • Issued: 11/04/2014
  • Est. Priority Date: 12/31/2007
  • Status: Expired due to Fees
First Claim
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1. A method for handling voice over internet protocol telephone calls, the method comprising:

  • receiving a communication session initiation message for a voice over internet protocol call from a caller at a source telephone number, the communication session initiation message including a destination telephone number and a direct voicemail feature identifier;

    determining that the direct voicemail feature identifier indicates that the caller requests that the call be sent directly to a voicemail mailbox associated with the destination telephone number;

    requesting a uniform resource identifier (URI) associated with the destination telephone number from a telephone number (ENUM) server;

    in response to the requesting, receiving from the ENUM server a list of URIs associated with the destination telephone number, wherein the list of URIs includes indications of service names and service types;

    selecting a voicemail URI from the list, wherein the voicemail URI in the list of URIs includes a service name indicating voicemail and a service type indicating voicemail;

    replacing a uniform resource locator of the communication session initiation message with the voicemail URI; and

    forwarding the call directly to the voicemail mailbox associated with the destination telephone number without ringing the destination telephone number, by;

    inserting the destination telephone number in a redirecting number field; and

    replacing content of a destination field with an identifier associated with a voicemail server containing the voicemail mailbox.

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