CastleNet eyes IPTV-over-cable; BT flips for Cisco

> CastleNet Technology is the latest company with sights set on IPTV via DOCSIS 3.0.

> BT teams with Cisco Systems to promote Flip video as a tool for small businesses.

> Open Mobile Video Coalition preparing for next month's CES, mobile DTV's rise.

> Germany's DT introduces a networked DVR offering for its IPTV service.

> Portugal Telecom tests plastic optical fiber technology for home networking.