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Cisco Unified IP Phone 7970G/7971G-GE Administration Guide for Cisco Unified Communications Manager 7.0
OL-15299-01
Chapter 1 An Overview of the Cisco Unified IP Phone
Understanding Security Features for Cisco Unified IP Phones
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.
Establishing and Identifying Protected Calls
A protected call is established when your phone, and the phone on the other end, is configured for
protected calling. The other phone can be in the same Cisco Unified IP network, or on a network outside
the IP network. Protected calls can only be made between two phones. Conference calls and other
multiple-line calls are not supported.
A protected call is established using this process:
1. A user initiates the call from a protected phone (protected security mode).
2. The phone displays the icon (encrypted) on the phone screen. This icon indicates that the phone
is configured for secure (encrypted) calls, but this does not mean that the other connected phone is
also protected.
3. A security tone plays if the call is connected to another protected phone, indicating that both ends
of the conversation are encrypted and protected. If the call is connected to a non-protected phone,
then the secure tone is not played.
Note Protected calling is supported for conversations between two phones. Some features, such as conference
calling, shared lines, Extension Mobility, and Join Across Lines are not available when protected calling
is configured.