Secure Phone Call Identification - Cisco 8832 Administration Manual

Cisco IP Conference Phone Administration
Table 11: Security Restrictions with Conference Calls
Initiator Phone Security
Level
Nonsecure
Secure
Secure
Nonsecure
Secure

Secure Phone Call Identification

A secure call is established when your phone, and the phone on the other end, is configured for secure calling.
The other phone can be in the same Cisco IP network, or on a network outside the IP network. Secured calls
can only be made between two phones. Conference calls should support secure call after secure conference
bridge set up.
A secured call is established using this process:
1. A user initiates the call from a secured phone (secured security mode).
2. The phone displays the secure icon
for secure calls, but this does not mean that the other connected phone is also secured.
3. The user hears a security tone if the call connects to another secured phone, indicating that both ends of
the conversation are encrypted and secured. If the call connects to a nonsecure phone, the user does not
hear the security tone.
Note Secure calling is supported between two phones. For protected phones, some features, such as conference
calling, shared lines, and Extension Mobility, are not available when secure calling is configured.
Only protected phones play these secure or nonsecure indication tones. Nonprotected phones never play tones.
If the overall call status changes during the call, the indication tone changes and the protected phone plays
the appropriate tone.
Feature Used
Conference
Conference
Conference
Meet Me
Meet Me
Cisco IP Conference Phone 8832 Administration Guide for Cisco Unified Communications Manager
Security Level of
Participants
Secure
At least one member is
nonsecure.
Secure
Minimum security level
is encrypted.
Minimum security level
is nonsecure.
on the phone screen. This icon indicates that the phone is configured
Secure Phone Call Identification
Results of Action
Nonsecure conference
bridge
Nonsecure conference
Secure conference bridge
Nonsecure conference
Secure conference bridge
Secure encrypted level
conference
Initiator receives message
Does not meet
Security Level,
call rejected.
Secure conference bridge
Conference accepts all
calls.
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