Comcast (NASDAQ:CMCSA) Business has extended its fiber-based network in San Ramon, CA. The company installed more than one and a half miles of fiber, both underground and aerial, to the San Ramon Business Park. The $250,000 network expansion is designed to provide Ethernet business services capacity up to 10 Gbps and to provide the park, home to more than 167 businesses, to receive fiber-based Internet for the first time, as well as IP-based voice services.