Cisco 7962G Administration Guide - Page 27

Chapter 1 An Overview of the Cisco Unified IP Phone Understanding Security Features for Cisco Unified IP Phones Identifying Encrypted and Authenticated Phone Calls When security is implemented for a phone, you can identify authenticated or encrypted phone calls by icons on the screen on the phone. In an authenticated call, all devices participating in the establishment of the call are authenticated by Cisco Unified Communications Manager. When a call in progress is authenticated, the call progress icon to the right of the call duration timer in the phone LCD screen changes to this icon . In an encrypted call, all devices participating in the establishment of the call are authenticated by Cisco Unified Communications Manager. In addition, call signaling and media streams are encrypted. An encrypted call offers the highest level of security, providing integrity and privacy to the call. When a call in progress is being encrypted, the call progress icon to the right of the call duration timer in the phone LCD screen changes to the following icon: . Note If the call is routed through non-IP call legs, for example, PSTN, the call may be nonsecure even though it is encrypted within the IP network and has a lock icon associated with it. Related Topic • Understanding Security Profiles, page 1-12 • Understanding Security Features for Cisco Unified IP Phones, page 1-8 • Security Restrictions, page 1-16 Establishing and Identifying Secure Conference Calls You can initiate a secure conference call and monitor the security level of participants. A secure conference call is established using this process: 1. A user initiates the conference from a secure phone (encrypted or authenticated security mode). 2. Cisco Unified Communications Manager assigns a secure conference bridge to the call. 3. As participants are added, Cisco Unified Communications Manager verifies the security mode of each phone (encrypted or authenticated) and maintains the secure level for the conference. 4. The phone displays the security level of the conference call. A secure conference displays (encrypted) or (authenticated) icon to the right of "Conference" on the phone screen. If icon displays, the conference is not secure. Note There are interactions, restrictions, and limitations that affect the security level of the conference call depending on the security mode of the participant's phones and the availability of secure conference bridges. See Table 1-4 and Table 1-5 for information about these interactions. OL-14625-01 Cisco Unified IP Phone 7962G and 7942G Administration Guide for Cisco Unified Communications Manager 6.1 1-13