Cisco Cisco Unified Contact Center Enterprise 9.0(1) Installation Guide

Reporting capacity is diminished
until the completion of the Side B

Upgrade the Administration
& Data Server.

1 hour + data
migration time

5

Logger, CallRouter and

Administration & Data Server
upgrade is brought back into
service.

Routing is done by the
non-upgraded system.

Upgrade the Side A Logger.

1 hour + data
migration time

6

Both existing CallRouters are
duplexed.

The Logger is simplex.

Configuration changes are disabled.

The production system is running
simplex on Side B.

Upgrade the Side A
CallRouter.

1 hour

7

Default routing occurs from the
shutdown of the existing system

None.

Invoke the Upgraded
Administration & Data

1+ hours
depending on
number of PGs

8

until the new Side A CallRouter

Server, when available, at
any point after Step 8.

and Logger are brought into
service.

Bring down the production
system (CallRouters,

Real-time reporting is provided via
the temporary Administration &
Data Server set up in Step 4.

Loggers, and Administration
& Data Servers).

Historical reporting is not available
until the Administration & Data

Invoke the new Side A
CallRouter and Logger.

Server upgrade is complete and
brought back online.

Point the temporary
Administration & Data
Server, PGs, to the new

Reporting capacity remains reduced
until the completion of the Side B

CallRouter & Logger in the
new domain.

Logger, CallRouter and
Administration & Data Server
upgrade is brought back into
service.

Routing is simplex until the Side B
CallRouter is upgraded and brought
into service.

Upgrade the Side B
CallRouter.

1 hour

9

Upgrade Guide for Cisco Unified ICM/Contact Center Enterprise & Hosted Release 9.0(1)