User Guide

Table Of Contents
Application Instance/MR PG Fail-over
If the connection between the Application Instance and MR PG shuts down or either component
shuts down, the Central Controller discards all pending NEW_TASK requests received from
the application.
The Application Instance waits for the connection to be restored and continues to send messages
regarding existing tasks and new tasks assigned by the Application Instance to the Agent PG
CTI server. When the connection, MR PIM, or Application Instance is restored, the Application
Instance resends any pending NEW_TASK requests for which it has not received a response
from the Central Controller. The tasks that are assigned to the agent by the Application Instance
while the connection is down and completed before the connection is restored do not appear in
WebView reports.
Note: If the Application Instance shuts down, this also affects Agent PG CTI server connections.
If the connection between the MR PIM and the Central Controller shuts down or the Central
Controller shuts down, the MR PIM sends a ROUTING_DISABLED message to the Application
Instance that causes the Application Instance to stop sending routing requests to the Central
Controller.
Any request sent while the connection is down is rejected with a NEW_TASK_FAILURE
message. The Application Instance continues to send messages regarding existing tasks and
new tasks assigned by the Application Instance to the Agent PG CTI server.
When the connection or Central Controller is restored, the MR PIM sends the Application
Instance a ROUTING_ENABLED message that causes the Application Instance to start sending
routing requests to the Central Controller again. The tasks that are assigned to the agent by the
Application Instance while the connection is down and completed before the connection is
restored do not appear in reports. If the connection between the Central Controller and the MR
PG fails, the Router deletes all pending new tasks. When the connection is restored, the
application connected to MR PG will resubmit all the tasks.
Note: If the Central Controller shuts down, this also affects the application instance/ Agent PG
CTI server interface.
Application Instance/Agent PG CTI Server/ PIM Fail-over
If the connection between the Application Instance and Agent PG CTI server shuts down or
either component shuts down, agents stay logged in. Tasks remain for a time, based on the task
life attribute of the MRD. If the task life expires while the connection is down, tasks are
terminated with the disposition code of 42 (DBCD_APPLICATION_PATH_WENT_DOWN).
Note: For the E-Mail MRD, agents are not logged out automatically when the Agent PG CTI
server or connection to CTI server shuts down. Instead the E-Mail Manager continues to record
agent state and assign tasks to agents. When the connection is restored, the E-Mail Manager
sends the updated agent state information on the peripherals serviced by the Agent PG CTI
server to the CTI server, which sends the information to Unied ICM software. The software
attempts to recreate historical data and corrects current agent state. If the connection or Agent
Reporting Guide for Cisco Unified ICM Enterprise & Hosted Release 7.2(1)
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Chapter 10: Reporting Implications of Data Loss and Component Failover
Other Possible Points of Failover