Security Restrictions; Cisco Unified Wireless Ip Phone 7925G, 7925G-Ex, And 7926G Deployment - Cisco 7925G Administration Manual

Cisco Unified Wireless IP Phone
2 The phone displays the
configured for secure (encrypted) calls, but the icon does not mean that the other connected phone is also
protected.
3 A security tone plays if the call is connected to another protected phone, indicating 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.
Protected calling is supported for conversations between two phones. Some features, such as conference
Note
calls, shared lines, Extension Mobility, and Join Across Lines, are not available when protected calling
is configured.
Related Topics
Security Features, on page 14
Security Profiles, on page 17
Security Restrictions, on page 19

Security Restrictions

When using a phone that is not configured for encryption, the user cannot barge into an encrypted call. When
barge fails in this case, a reorder (fast busy) tone plays on the barge initiator phone.
If the phone is configured for encryption, the user can barge into an authenticated or nonsecure call from the
encrypted phone. After the barge occurs, Cisco Unified Communications Manager classifies the call as
nonsecure.
If the phone is configured for encryption, the user can barge into an encrypted call, and the phone indicates
that the call is encrypted.
A user can barge into an authenticated call, even if the phone that is used to barge is nonsecure. The
authentication icon continues to display on the authenticated phones in the call, even if the initiator's phone
does not support security.
Cisco Unified Wireless IP Phone 7925G, 7925G-EX, and 7926G
Deployment
When deploying a new IP telephony system, system administrators and network administrators must complete
several tasks to prepare the network for IP telephony service. For information and a checklist for setting up
and configuring a complete Cisco IP telephony network, see the "System Configuration Overview" chapter
in the Cisco Unified Communications Manager System Guide.
After you have set up the IP telephony system and configured system-wide features in Cisco Unified
Communications Manager Administration, you can add IP phones to the system. To add Cisco Wireless IP
Phones to the IP network, system administrators should conduct a site survey to determine strategic locations
for access points (APs) to ensure good wireless voice coverage. For detailed information about a voice over
WLAN deployment, see the Cisco Unified Wireless IP phone 7925 and 7926 Series Deployment Guide at
icon (encrypted) on the phone screen. This icon indicates that the phone is
Cisco Unified Wireless IP Phone 7925G, 7925G-EX, and 7926G Administration Guide
Security Restrictions
19