Call Security Interactions And Restrictions - Cisco 7941G Administration Manual

Cisco Unified IP Phone
3 A security tone plays if the call connects to another protected phone; the tone indicates that both ends of
the conversation are encrypted and protected. If the call is connected to a nonprotected phone, the secure
tone does not play.
Note Protected calling is supported for conversations between two phones. Some features, such as conference,
shared lines, Cisco Extension Mobility, and Join Across Lines are not available when protected calling is
configured.

Call Security Interactions and Restrictions

Cisco Unified Communications Manager checks the phone security status when conferences are established
and changes the security indication for the conference or blocks the completion of the call to maintain integrity
and security in the system. The following table provides information about changes to call security levels
when using Barge.
Table 4: Call Security Interactions When Using Barge
Initiator's Phone Security
Level
Non-secure
Secure (encrypted)
Secure (authenticated)
Nonsecure
The following table provides information about changes to conference security levels depending on the
initiator's phone security level, the security levels of participants, and the availability of secure conference
bridges.
Table 5: Security Restrictions with Conference Calls
Initiator's Phone
Security Level
Nonsecure
Secure
(encrypted or
authenticated)
Secure
(encrypted)
Call Security Level
Encrypted call
Authenticated call
Encrypted call
Authenticated call
Feature Used
Conference
Conference
Conference
Cisco Unified IP Phone 7941G, 7941G-GE, 7942G, 7961G, 7961G-GE, and 7962G Administration Guide for Cisco Unified
Authenticated, Encrypted, and Protected Phone Calls
Results of Action
Call barged and identified as non-secure call
Call barged and identified as authenticated call
Call barged and identified as authenticated call
Call barged and identified as nonsecure call
Security Level of
Participants
Encrypted or authenticated
At least one member is
non-secure.
All participants are
encrypted.
Communications Manager 9.0 (SCCP and SIP)
Results of Action
Nonsecure conference bridge
Nonsecure conference
Secure conference bridge
Nonsecure conference
Secure conference bridge
Secure encrypted level conference
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