Salvatore Collora, CCIE No. 4321, is a network consulting engineer for Cisco Systems Advanced Services who specializes in implementing IP telephony and security in large customer networks. He has deployed many large CallManager-based IP telephony networks and often works in emergency situations to fix improper installation and configuration of CallManager.
Ed Leonhardt, CCIE No. 3264, is a consulting systems engineer and serves as a technical lead in the combined Enterprise/Service Provider IP Telephony Technology Leadership Program at Cisco Systems. He drives new product requirements to the individual product teams and guides overall system engineer development in technologies surrounding IP telephony.
Anne Smith is a software engineer in the Unified Communications Manager architecture group at Cisco Systems. She joined Cisco as part of the Selsius Systems acquisition in 1998 and is the co-author of Cisco CallManager Fundamentals, Cisco CallManager Best Practices, and Developing Cisco IP Phone Services.