Cisco Cisco Agent Desktop 8.5 Guia Do Utilizador
Fault Tolerance
July 2008
23
Fault Tolerance
The IP Phone Agent service is fault tolerant if there are two or more IP Phone Agent
servers. If one server fails, the other server takes over. If the primary server fails, you
are automatically logged out and you must manually log in to the secondary server.
servers. If one server fails, the other server takes over. If the primary server fails, you
are automatically logged out and you must manually log in to the secondary server.
Redundancy
In a redundant system, the Services menu on your IP Phone displays two IP Phone
Agent services (if your system administrator has configured them). Only one service
can be active at any one time. If you attempt to log in to an inactive service, an error
message appears, directing you to select another service (
Agent services (if your system administrator has configured them). Only one service
can be active at any one time. If you attempt to log in to an inactive service, an error
message appears, directing you to select another service (
).
Failover
If one of the Cisco Agent Desktop (CAD) services fails in a redundant system, the
backup service takes over, usually within one minute after the primary service fails.
backup service takes over, usually within one minute after the primary service fails.
If the IP Phone Agent service that you are logged into fails, you are logged out of the
Cisco Chat Service and you no longer appear as an agent in Cisco Supervisor Desktop.
You are not notified, however, until one of the following events occurs:
Cisco Chat Service and you no longer appear as an agent in Cisco Supervisor Desktop.
You are not notified, however, until one of the following events occurs:
■
You make a request from your IP phone, by pressing the Update soft key or by
changing your agent state, for example.
changing your agent state, for example.
■
The IP Phone Agent screen is refreshed.
At this time, the following error message appears on your IP phone screen: “Unable to
communicate with the IP Phone Agent service.” This message indicates that your IP
phone is no longer communicating with the IP Phone Agent service you logged into.
communicate with the IP Phone Agent service.” This message indicates that your IP
phone is no longer communicating with the IP Phone Agent service you logged into.
Figure 13.
Error message after attempting to log into inactive service
14:23 02/15/04
2101
SERVICES
Selected IP Phone Agent service is
not active. Select another IP
Phone Agent service.
Phone Agent service.
Make Your Selection...
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