User guide

SoftkeyProgrammable feature
button
Dedicated feature buttonFeature name
XXQuality Reporting Tool
(QRT)
XXRedial
XMonitoring and recording
XXSpeed Dial
XSpeed Dial Line Status
XXTransfer
Survivable Remote Site Telephony Overview
If communication between your phone and the Cisco Unified Communications Manager is interrupted, you
receive an alert message on your phone. If you are on an active call, the call remains established, and you
enter a failover situation. The Survivable Remote Site Telephony (SRST) feature handles this failover.
While in failover, all the features of your phone are not available. The following table describes typical feature
and feature availability, although not all the features may be supported on your phone. For more information,
contact your system administrator.
When your phone loses connectivity, your phone may display a message like this:
Service interruption.
Table 3: Feature Support During Failover
NotesSupportedFeature
YesNew Call
YesEnd Call
YesRedial
YesAnswer
YesHold
YesResume
YesConference
The Active Calls softkey is not
displayed.
NoConference to Active Calls (Join)
Cisco IP Phone 7821, 7841, and 7861 User Guide for Cisco Unified Communications Manager 10.0 (SIP)
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Advanced Operations
Survivable Remote Site Telephony Overview