Cisco 7921G Administration Guide - Page 21

Chapter 1 Overview of the Cisco Unified Wireless IP Phone 7921G Understanding Security Features for Cisco Unified IP Phones Understanding Security Features for Cisco Unified IP Phones Implementing security in the Cisco Unified Communications Manager system prevents identity theft and prevents data, call signaling, and media stream tampering. To reduce or eliminate threats, the Cisco IP telephony network establishes and maintains authenticated and encrypted communication streams between a phone and the Cisco Unified Communications Manager server, digitally signs files before transferring the files to a phone, and encrypts media streams and call signaling between Cisco Unified IP phones. Table 1-1 contains additional information about security. Table 1-1 Cisco Unified IP Phone and Cisco Unified Communications Manager Security Topics Topic Reference Detailed explanation of security, including set up, configuration, and troubleshooting information for Cisco Unified Communications Manager and Cisco Unified IP Phones Refer to Cisco Unified Communications Manager Security Guide Security features supported on the Cisco Unified See the "Overview of Supported Security IP Phone Features" section on page 1-8 Restrictions regarding security features See the "Security Restrictions" section on page 1-11 Viewing a security profile name when running Cisco Unified Communications Manager 5.0 or later See the "Understanding Security Profiles" section on page 1-10 Identifying phone calls for which security is implemented See the "Identifying Encrypted and Authenticated Phone Calls" section on page 1-11 Transport Layer Security (TLS) connection See the "Networking Protocols Used with Cisco Unified Wireless IP Phones" section on page 2-7 See the "Phone Configuration Files and Profile Files" section on page 2-12 Security and the phone startup process See the "Understanding the Phone Startup Process" section on page 3-18 Security and phone configuration files See the "Phone Configuration Files and Profile Files" section on page 2-12 Changing the TFTP Server 1 or TFTP Server 2 See the "Configuring Network Profiles" section option on the phone when security is implemented on page 4-8 Items on the Security Configuration menu on the See the "Viewing Security Information" section phone on page 8-1 Unlocking the CTL file See the "Accessing the CTL File Screen" section on page 8-3 Disabling access to phone web pages See the "Product-Specific Configuration Options for the Cisco Unified Wireless IP Phone 7921G" section on page 7-13 OL-15985-01 Cisco Unified Wireless IP Phone 7921G Administration Guide for Cisco Unified Communications Manager Release 7.0 1-7