* Lucent appints a COO to help improve the company's business
* Cisco CEO John Chambers on service provider business
* Verizon buys MCI and focuses on business customers
* Managmement shakeup at Juniper Networks
* Also: MCI, Microsoft team for VoIP service; Verizon testing Nortel equipment for IMS infrastructure
* AT&T would like to gain tighter - if not full - control of Cingular Wireless
Analysts believe RBOC may be target because of joint wireless venture.
