Jupiter Telecommunications Co. Ltd. (J:COM), the largest cable operator in Japan, is set to roll out a symmetrical 100 Mbps data service next month to multi-dwelling unit (MDU) customers.

J:COM said it will offer the service by extending its legacy fiber-rich cable network to the outside wall of participating MDUs. From there, the service will hook into a coax-based, subscriber-side networking system powered by silicon from Entropic Communications, a key member of the Multimedia over Coax Alliance (MoCA). The modem/gateway will be based on Entropic’s “c.LINK” technology, which is being designed to network information over legacy home coax networks at up to 250 Mbps.

The MSO will market the service under the “J:COM NET Hikari” name, and offer it to MDU customers as part of a bulk service package. J:COM hopes to offer a commercial version of it this fall.

J:COM already offers 30 Mbps and 8 Mbps data services. The operator has not yet publicized pricing on the 100 Mbps tier.