Cisco CP-3911 - Unified SIP Phone 3911 VoIP Administration Manual page 63

Chapter 4 Configuring Settings on the Cisco Unified IP Phone
Cisco Unified Communications Manager Options
Cisco Unified SIP Phone 3911 Administration Guide for Cisco Unified Communications Manager
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The CallManager 1 through CallManager 5 options on the Network configuration
menu show the host names or IP addresses, in prioritized order, of the Cisco
Unified Communications Manager servers that the phone can register to. These
options show Cisco Unified Communications Manager servers that are available
for processing calls from the phone, in prioritized order.
For an available server, an option will show the Cisco Unified Communications
Manager server IP address and one of the following states:
Active—Cisco Unified Communications Manager server from which the
•
phone is currently receiving call-processing services.
Standby—Cisco Unified Communications Manager server to which the
•
phone switches if the current server becomes unavailable.
Blank—No current connection to this Cisco Unified Communications
•
Manager server.
An option may also include using CallManager 4 and CallManager 5 as one of
these designations:
• SRST—Indicates Survivable Remote Site Telephony (SRST) designation,
which indicates an SRST router capable of providing Cisco Unified
Communications Manager functionality with a limited feature set. This router
assumes control of call processing if all other Cisco Unified Communications
Manager servers become unreachable. The SRST Cisco Unified
Communications Manager always appears last in the list of servers, even if it
is active.
After a failover to a SRST router, the phone will monitor the links to the
Note
Cisco Unified Communications Manager servers that the phone can
register to. When a server has been available for two minutes, by default,
the phone will fall back from the router to that server. You can change this
default time by specifying another value for the Connection Monitor
Duration parameter in Cisco Unified Communications Manager
Administration. For more information, refer to Cisco Unified
Communications Manager Administration Guide.
Configuration Menus on the Cisco Unified IP Phone
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