Implementation and experimental results of CLAD using SRTS method in ATM networks

Abstract

Timing information must be transported through an ATM network when a CBR signal, whose timing is independent of that of the network, is transmitted as ATM cells. For this purpose, ITU-T Recommendation I.363 defines the SRTS (synchronous residual time stamp) method. The authors implement a DS-3 CLAD (cell assembly and disassembly) device using the SRTS method. The SRTS method generates jitter, which is similar to the destuff jitter experienced in a stuff multiplexing system. Amplitude and spectrum of the SRTS jitter are evaluated using the DS-3 CLAD device. Finally, high speed data transmission is conducted between FDDI-LANs, and high quality NTSC video transmission is achieved using the CLAD device in an ATM field trial.