Cisco Systems 8945, 8941 manual Initiator’s Phone, Feature Used, Results of Action

Chapter

Understanding Security Features for Cisco Unified IP Phones

Note Protected calling is supported for conversations between two phones. Some features, such as conference calling, shared lines, Cisco Extension Mobility, and Join Across Lines are not available when protected calling is configured.

Call Security Interactions and Restrictions

Cisco Unified CM checks the phone security status when audio 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 1-5provides information about changes to call security levels when using Barge.

Table 1-5	Call Security Interactions When Using Barge
Initiator’s Phone
Security Level		Feature Used	Call Security Level	Results of Action
Non-secure		cBarge	Encrypted call	Call barged and identified as nonsecure call
Secure		cBarge	Secure call	Call barged and identified as Secure call

Table 1-6provides 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 1-6	Security Restrictions with Conference Calls
	Initiator’s Phone
	Security Level		Feature Used	Security Level of Participants	Results of Action
	Non-secure		Conference	Encrypted	Nonsecure conference bridge
					Nonsecure conference
	Secure		Conference	At least one member is	Secure conference bridge
				non-secure	Nonsecure conference
	Secure		Conference	All participants are encrypted	Secure conference bridge
					Secure encrypted level
					conference
	Secure		Join	Encrypted	Secure conference bridge
					Conference remains secure
	Non-secure		cBarge	All participants are encrypted	Secure conference bridge
					Conference changes to
					non-secure
	Non-secure		MeetMe	Minimum security level is	Only non-secure conference
				encrypted	bridge is available and used
					Non-secure conference
	Secure		MeetMe	Minimum security level is	Only secure conference bridge
				nonsecure	available and used
					Conference accepts all calls
Cisco Unified IP Phone 8941 and 8945 Administration Guide for Cisco Unified Communications Manager 8.5 (SCCP and SIP)
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