Patent ID: 8086748
Filing Date: 2011-12-27
Classification: H04L

Abstract:
1. A computer-implemented method of extending a protocol synchronization period, comprising: receiving at a Point-to-Point Protocol (PPP) server an Internet Protocol Control Protocol (IPCP) configuration request from a PPP client, wherein the IPCP configuration request comprises requested IPCP parameters; negotiating by the PPP server for IPCP parameters from an interworking function (IWF) based on the IPCP configuration request; transmitting to the PPP client a negative acknowledgment message in response to the IPCP configuration request prior to a completion of the negotiating in order to extend the protocol synchronization period, wherein the transmitting further comprises including, regardless of the requested IPCP parameters, a predetermined address different from a potentially valid IP address assignable to the PPP client for establishing a PPP communication link with the IWF and deliberately omitting an IP address from the negative acknowledgement message; and transmitting to the PPP client an acknowledgement message in response to the IPCP configuration request if the PPP server has received the IPCP parameters to complete the protocol synchronization period.