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19-1
Cisco Unified Communications Manager Administration Guide
OL-18611-01
19
Survivable Remote Site Telephony Configuration
Use the following topics to add, update, copy, or delete a SRST reference:
• SRST Reference Configuration Settings, page 19-1
• Finding an SRST Reference, page 19-2
• Configuring an SRST Reference, page 19-4
• Deleting an SRST Reference, page 19-4
• Related Topics, page 19-5
SRST Reference Configuration Settings
A survivable remote site telephony (SRST) reference comprises the gateway that can provide limited
Cisco Unified Communications Manager functionality when all other Cisco Unified Communications
Manager servers for a device are unreachable. Typically assigned to device pools, SRST references
determine the gateways where calling devices search when they attempt to complete a call if Cisco
Unified Communications Manager is unavailable. For more detailed information on SRST references,
refer to the
“Survivable Remote Site Telephony References” section in the Cisco Unified
Communications Manager System Guide.
Table 19-1 describes the SRST reference configuration settings. For related procedures, see the “Related
Topics” section on page 19-5.
Table 19-1 SRST Reference Configuration Settings
Field Description
Name Enter a name in the SRST Reference Name field. The name can
comprise up to 50 alphanumeric characters and can contain any
combination of spaces, periods (.), hyphens (-), and underscore
characters (_). Ensure that each SRST reference name is unique.
Note Use concise and descriptive names for your SRST references.
Port Enter the port number for this SRST reference. Default value specifies
2000.
Note Change this value only if it does not match the gateway port
setting. This value and the gateway port setting must match.
IP Address Enter the IP address of the gateway for devices in a device pool to use
as an SRST reference.