Patent ID: 6891827
Filing Date: 2005-05-10
Classification: H04L,H04M

Abstract:
1. A method for operating an Internet telephony gateway comprising: accessing a call between a terminal unit for a public switched telephone network (PSTN) and a terminal unit for an Internet protocol (IP) network; respectively monitoring states of the PSTN and the IP network through a board for the PSTN and a board for the IP network; generating an alarm in the board for the PSTN when any failure occurs in the PSTN, wherein generating the alarm comprises converting alarm data of a hard disk drive (HDD) module to first serial data, converting parallel input state data of a fan and cables to second serial data, converting the first and second serial data to parallel data, and adding the parallel data to state data of ejection, injection, and operation of boards, input in parallel from a printed board assembly (PBA); blocking a channel between the Internet telephony gateway and the PSTN; and terminating the call with the terminal unit for the IP network.