Japanese telecoms group KDDI Corp yesterday announced plans to launch a fibre-optic service promising symmetrical data transmission rates of up to 1Gbps from 1 October. Jiji Press writes that the new service will target Japanese households and low-rise apartment buildings and will offer the fastest traffic speeds anywhere in eastern Japan; the current top speed is 100Mbps. KDDI says its new service will challenge the dominance of NTT in the fibre-optic broadband market. The state-backed operator currently controls more than 70% of the residential user market for fibre-optic broadband services. The operator intends to charge JPY5,985 (USD56.54) per month for the basic service which includes internet access and voice telephony services.