Sycamore Networks decided late last month to discontinue marketing or developing the BSG line of products it obtained through its acquisition of Eastern Research last year.

Eastern introduced the BSG-1u Base Station Access Gateway in early 2005 as a way to help mobile operators migrate to packet-based networks.

Last fall, not long after closing its $80-million cash acquisition of Eastern, Sycamore discontinued Eastern’s OX8000 optical cross-connect product, noting in regulatory filings that the product, unveiled in 2005, was “in the development stage on the date of acquisition.” Sycamore has been selling its own optical cross-connects for years.

Sycamore expects to record charges totaling $10.7 million in connection with the BSG cancellation. It recorded $7.7 million in charges to cancel the OX8000.

The OX and BSG products represented two of Eastern’s three primary hardware product groups, the third being its flagship DNX multiservice access platform.

“[Sycamore’s] access product line remains a focus of [the company’s] strategy of providing its customers an intelligent networking solution from access to the optical core,” the vendor wrote in regulatory filings this week. “[Sycamore] expects to concentrate its future research and development efforts on initiatives driven by its customer’s [sic] needs that include intelligent multi-service networking, dynamic control plane technology, advanced service management, and network management.”