By Cindy Waxer   Hoping to offer its customers greater quality of service, O1 Communications, a provider of next-generation telecommunication services in Sacramento, Calif., has deployed Lucent’s integrated switching platform to migrate its network to an IMS-ready softswitch-based IP network for advanced voice services. The move lets O1 add VoIP features and offer VoIP Services throughout the state of California.   The Lucent Compact Switch is a carrier-class solution with fault-tolerant hardware and software that delivers uptime for all voice and data services and with redundancy that extends to every part of the system including inputs and outputs, switching fabric, and system processing. The switch can support from as few as 1,000 subscribers to more than 100,000 subscribers.   Lucent’s solution will enable O1 to deliver tandem switching and advanced next-generation VoIP services to enterprises and wholesale customers throughout California. Lucent Worldwide Services is providing integration, installation and engineering services.   “O1 Communications has invested thousands of engineering hours and significant capital to develop our VoIP network. By deploying Lucent`s carrier-grade platform, O1`s customers can rely on a network to provide even greater quality of service, security and reliability, and do it in a very cost-effective way,” said Brad Jenkins, president of O1.   The Lucent switch also can serve as a building block for carriers that choose to migrate to an IP Multimedia Subsystem (IMS) network to offer blended lifestyle services.