Patent ID: 7623649

Claim:
A system for emulating an MLPP telephone without a need for a physical MLPP telephone instrument by using a software function that provides screen display of a well-recognized MLPP keypad generated by a computer-based application adaptable for any authorized user so that a user need not enter a series of special code sequences from a standard telephone keypad to activate priority features of an associated system, the system comprising: a display device configured to display a visual representation of a data entry portion that accepts telephone call initiation information, including MLPP priority information, from a user; and an information display portion that displays information relating to the data entry portion; wherein at least part of the system is connected to a PSTN utilizing Internet protocol (IP), wherein the audio interface is accomplished utilizing voice over Internet protocol (VOIP, wherein call initiation signaling with the PSTN is accomplished using out-of-band signaling through a SCP of the intelligent network, wherein call initiation signaling with the PSTN is accomplished using out-of-band signaling via a gateway provided between the PSTN and a private network utilizing SIP signaling (session initiation protocol), and wherein a SIP resource priority header is used to indicate that a request needs priority treatment.