Patent ID: 6687245
Filing Date: 2004-02-03
Classification: H04L,H04M

Abstract:
A method for performing IP telephony with an IP telephone, comprising:activating the IP telephone; performing client DHCP lease negotiation with the IP telephone, wherein an identifier of the IP telephone is used to determine a range of port numbers assigned to the IP telephone, wherein the range of port numbers comprises one or more port numbers which are not reserved for use by other liP protocols, wherein said identifier is comprised in a DHCP discover message issued by the IP telephone, wherein said performing client DHCP lease negotiation comprises: issuing a DHCP offer to the IP telephone if the identifier is determined to be valid, wherein the DHCP offer comprises DHCP lease information based on the validated identifier; the IP telephone issuing a DHCP request in response to the issued DHCP offer; storing the DHCP lease information in response to the issued DHCP request; the IP telephone storing the DHCP lease information; and the IP telephone enabling DHCP settings comprised in the DHCP lease information; initializing the IP telephone; registering the IP telephone; and performing IP communications using the IP telephone; wherein said performing IP communications uses one or more ports in the range of assigned ports.