Cohen, Pontani, Lieberman & Pavane
ATM switch interface apparatus for frame relay network interworking
The user cell is received from the FRIA (Frame Relay Interface Apparatus) for thereby performing a connection identifier-based usage parameter control function, and the user cell which follows the permitted traffic and the IPC cell received from the FRIA through the IPC bus are multiplexed and synchronized to the module clock of the clock generator. The thusly synchronized user cell and IPC cell are transmitted to the ATM switch which is away by a few meters. The head data of the ATM cell received from the ATM switch is analyzed. In the case of the user cell, the frame relay interface apparatus identifier is analyzed, and the cell is transmitted to a corresponding FRIA in accordance with a corresponding virtual path identifier and virtual channel identifier value, and in the case of the IPC cell and OAM cell, the processor processes the cell using the AAL5 reassembling unit, so that it is possible to provide a cell transmission function between the frame relay interface apparatus and the ATM switching system.
Korea Telecom Electronics and Telecommunications Research Institute
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Jung Sik Do Yeon Won Sik
Kim Kim Park