VSC6134

The VSC6134 is a bi-directional transport processor providing Forward Error Correction (FEC), SONET/SDH section and line processing, 10 Gb/s Ethernet performance monitoring and G.709 Digital Wrapper termination and generation for fiber optic transmission lines operating at approximately 10 Gb/s. As recommended by ITU-T G.975 and G.709, VSC6134 provides FEC based on a block oriented Reed-Solomon code RS(255,239) in addition to an optional proprietary FEC code that provides increased gain with the same overhead as RS(255,239). The required error correction symbols are transferred out of band increasing the transmission data rate by 7.1%.

The VSC6134 FEC device provides superior error correction of arbitrary data streams of approximately 10 Gb/s for applications in data and telecom networks. It is especially suitable for OC192c/STM- 64 SONET/SDH and 10Gbps Ethernet applications, as it supports monitoring and termination of section and line overhead as well as RMON.

As recommended by ITU-T G.709, in standard FEC mode, error coding is performed using a 16X interleaved block oriented Reed-Solomon RS (255,239) coder, resulting in a maximu
correctable burst error length of 1024 bits. In enhanced FEC mode, a different code with iterative decoding is used to provide increased code gain. Due to the out of band transmission of the parity bits and framing/overhead information, the transmission rate is increased by a factor of 1.07 in both standard and enhanced FEC mode resulting in a 10.7 Gb/s transmission rate.