G.959.1, the Recommendation that increased the capacity for multi-vendor optical interfaces developed to exploit the demand for high capacity Internet routers (see press release), has been updated to help further reduce costs for operators. The use of forward error correction (FEC) as defined in ITU-T Rec. G.709 will allow operators to transport data more cost-effectively through the use of lower cost electro-optics.
FEC is a method of sending redundant information with the data in one-way communication in order to allow the receiver to reconstruct the data if there was an error in transmission.
Experts say that in the last few years they have seen a shift in demand from operators who are now looking to maximize return on investment rather than increase distance covered etc. The revision of this Recommendation addresses this need.
This work forms part of ITUís ongoing work in optical transport networks (OTN) which encourages a fair market for manufacturers and operators, and ultimately encourages better service for consumers. It has been developed with input from the Optical Interworking Forum (OIF).