Patent ID: 7154897
Filing Date: 2006-12-26
Classification: H04Q

Abstract:
1. A gateway digital loop carrier device comprising: an integrated access device side terminating unit terminating a transmission signal sent from an integrated access device accommodating as a subscriber at least one of a telephone, a modem and ISDN and implementing a TR-008 interface; a demultiplexing unit demultiplexing the terminated transmission signal into DS a unit performing interface conversion of the demultiplexed DS a TR/GR-303RDT unit based on TR-303 or GR-303 and having a plurality of subscriber ports for sending the interface-converted DS a signaling converting unit for converting a subscriber line signaling system between TR-008 and TR-303 or GR-303, wherein said signaling converting unit extracts signaling information from the DS the signaling information in the TR-303 or GR-303 format is expressed in a 4-bit pattern outputted at an interval of 3 milliseconds, the signaling information in the TR-008 format is expressed in a 2-bit pattern outputted at an interval of 1.5 milliseconds, and said signaling converting unit converts the signaling information in the TR-008 format into the signaling information in the TR-303 or GR-303 format by converting the signaling information in the TR-008 format into two pieces of 2-bit patterns outputted in 3 milliseconds.