This topic provides links to IP telephony information and a list of the components and applications that make up a Cisco Unified Communications IP telephony system.
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Read IP Telephony Introduction 
for an overview of the IP telephony product portfolio.
•Read Compare Products and Solutions to see how IP telephony products fit into the Cisco Unified Communications system.
Note This list does not include IP endpoints (phones and video devices) or IP infrastructure equipment (routers, gateways, switches, and firewalls). For a list of those components, see Component Resources.
For ordering information, see the Order Equipment topic on the Implement tab.
For configuring information, see Install and Configure System Components on the Implement tab.
For product information, see Component Resources in the Resource Library.
The following components and applications can be employed in a Cisco Unified Communications IP telephony system:
•Cisco Unified CallManager
•Cisco Unified CallManager Express
•Cisco Unified Contact Center Express
•Cisco Emergency Responder
•Cisco Unity
•Cisco Unity Express
•Cisco Unity Connection
•Cisco Unified MeetingPlace
•Cisco Unified MeetingPlace Express
•Cisco Unified Survivable Remote Site Telephony (SRST)
•Cisco Fax Server
•Cisco SIP Proxy Server
•Cisco Unified MobilityManager
•Cisco Unified Operations Manager
•CiscoWorks Resource Manager Essentials
•Cisco Unified Presence Server
•Cisco Unified Personal Communicator