Cisco Systems 8851 Manual De Usuario
When a phone is configured as secure (encrypted and trusted) in Cisco Unified Communications Manager, it
can be given a “protected” status. After that, if desired, the protected phone can be configured to play an
indication tone at the beginning of a call:
can be given a “protected” status. After that, if desired, the protected phone can be configured to play an
indication tone at the beginning of a call:
• Protected Device: To change the status of a secure phone to protected, check the “Protected Device”
check box in the Phone Configuration window in Cisco Unified Communications Manager Administration
(Device > Phone).
(Device > Phone).
• Play Secure Indication Tone: To enable the protected phone to play a secure or nonsecure indication
tone, set the Play Secure Indication Tone setting to True. By default, Play Secure Indication Tone is set
to False. You set this option in Cisco Unified Communications Manager Administration (System >
Service Parameters). Select the server and then the Unified Communications Manager service. In the
Service Parameter Configuration window, select the option in the Feature - Secure Tone area. The default
is False.
to False. You set this option in Cisco Unified Communications Manager Administration (System >
Service Parameters). Select the server and then the Unified Communications Manager service. In the
Service Parameter Configuration window, select the option in the Feature - Secure Tone area. The default
is False.
Secure Conference Call Identification
You can initiate a secure conference call and monitor the security level of participants. A secure conference
call is established by using this process:
call is established by using this process:
1
A user initiates the conference from a secure phone.
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 and maintains the secure level for the conference.
phone and maintains the secure level for the conference.
4
The phone displays the security level of the conference call. A secure conference displays the secure icon
to the right of Conference on the phone screen.
Secure calling is supported between two phones. Secure conference, Cisco Extension Mobility, and shared
lines can be configured by secure conference bridge.
lines can be configured by secure conference bridge.
Note
The following table provides information about changes to conference security levels depending on the initiator
phone security level, the security levels of participants, and the availability of secure conference bridges.
phone security level, the security levels of participants, and the availability of secure conference bridges.
Table 18: Security Restrictions with Conference Calls
Results of action
Security level of
participants
participants
Feature
used
used
Initiator phone
security level
security level
Nonsecure conference bridge
Nonsecure conference
Secure
Conference
Nonsecure
Secure conference bridge
Nonsecure conference
At least one member is
nonsecure.
nonsecure.
Conference
Secure
Secure conference bridge
Secure encrypted level conference
Secure
Conference
Secure
Cisco IP Phone 8811, 8841, 8851, and 8861 Administration Guide for Cisco Unified Communications Manager
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Supported Security Features