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Chapter 1 An Overview of the Cisco Unified IP Phone
Understanding Security Features for Cisco Unified IP Phones
1-22
Cisco Unified IP Phone 7931G Administration Guide for Cisco Unified Communications Manager 6.1
OL-14587-01
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 also security in the
system.
Table 1-4 provides information about changes to call security levels when
using Barge.
Ta b l e 1-4 Call Security Interactions When Using Barge
Initiator’s Phone
Security Level
Feature Used Call Security Level Results of Action
Non-secure Barge Encrypted call Call barged and identified as non-secure
call
Secure (encrypted) Barge Authenticated call Call barged and identified as
authenticated call
Secure
(authenticated)
Barge Encrypted call Call barged and identified as
authenticated call
Non-secure Barge Authenticated call Call barged and identified as non-secure
call
Table 1-5 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.
Ta b l e 1-5 Security Restrictions with Conference Calls
Initiator’s Phone
Security Level
Feature Used
Security Level of
Participants
Results of Action
Non-secure Conference Encrypted or
authenticated
Non-secure conference bridge
Non-secure conference
Secure (encrypted
or authenticated)
Conference At least one
member is
non-secure
Secure conference bridge
Non-secure conference
Secure (encrypted) Conference All participants are
encrypted
Secure conference bridge
Secure encrypted level conference
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