Survivable Remote Site Telephony Overview - Cisco 7811 User Manual

Survivable Remote Site Telephony Overview

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
Feature
New Call
End Call
Redial
Answer
Hold
Resume
Conference
Conference to Active Calls (Join)
Conference List
Transfer
Transfer to Active Calls (Direct
Transfer)
Auto Answer
Call Waiting
Caller ID
Audible Message Waiting Indicator
Cisco IP Phone 7811, 7821, 7841, and 7861 User Guide for Cisco Unified Communications Manager 10.0 (SIP)
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Supported
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
Yes
No
Yes
Yes
Yes
Yes
Advanced Operations
Notes
The support is only for three way
and local mixing.
Consult only