A clutch of networking companies is working to create a standard for cable modems, and Cisco Systems Inc has just added its weight to the effort. Along with Hayes Microcomputer Products Inc, Samsung Electronics Co Ltd and Thomson Consumer Electronics, Cisco is working to design a specification based on the Data Over Cable Service Interface Specification (DOCSIS). Cisco says it has no intention of actually manufacturing cable modems, but will license out its design. The spec will define equipment at both the user location and cable operator’s headend. Other manufacturers not yet part of the team include 3Com Corp, Bay Networks Inc, Motorola Inc, Scientific-Atlanta Inc and NextLevel Systems Inc, though Cisco said the quartet is trying to bring other companies on board.