Installation Guide

Note: More detailed information is provided about installing and configuring PGs in the ICM
Installation Guide for Cisco ICM Enterprise Edition. What is provided here is information
particular to the IPCC Express Gateway PG.
IPCC Express Gateway PG Setup and Time Synchronization
The Disable ICM time synchronization checkbox in the MDS and DMP Properties dialog
affects time synchronization between systems. Since the Windows operating system uses its
own integrated time service--making it unnecessary for Unified ICME to perform a separate
time synchronization--the box is checked by default. The Unified ICME documentation states
that you should accept this default, except in cases where the PG is configured as a workgroup
machine (that is, not a domain).
However, when an IPCC Express Gateway PG is co-located with Unified CCX, this box should
always be checked, even in cases where the Unified CCX machine is in a workgroup. The reason
for this is because Unified CCX uses the Network Time Protocol (NTP) service to synchronize
the Unified CCX system time with the NTP server that runs on the Cisco Unified
Communications Manager. If the Disable ICM time synchronization box is "unchecked", the
IPCC Express Gateway PG will attempt time synchronization with the ICM Central Controller;
this will conflict with the NTP service.
Warning: This dual-time synchronization can have a detrimental impact on Unified CCX
functionality!
Accepting the default for the Disable ICM time synchronization checkbox during the IPCC
Express Gateway PG setup will prevent a conflict and the NTP client service running on Unified
CCX machine will be able to keep the time synchronized with the Unified CM.
This means that the time on the Unified CCX server and the ICM Central Controller might not
be in sync. When this happens:
•
The IPCC Express Gateway PG-specific historical data records the Unified CCX system
time.
•
The ICM central controller delivers a warning message that the IPCC Express Gateway PG
is out-of-sync with the Unified ICME system.
•
Peripheral reports might not cover equivalent time periods relative to system reports (for
example, Call Type reports).
This behavior is similar to what is seen when other ACDs are integrated with Unified ICME.
For more information, see "Understanding Reporting in an IPCC Gateway Deployment" (page
51).
Autoconfiguration between Unified CCX and Unified ICME
Autoconfiguration is a feature of the IPCC Gateway that minimizes the need to perform redundant
configuration tasks on the Unified CCX child and the Unified ICME parent.
Cisco IPCC Gateway Deployment Guide for Unified ICME, Unified CCE, and Unified CCX, Enterprise Releases 7.2(1) and Express Release 5.0(1)
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Chapter 3: - Deploying IPCC Gateway with Unified CCX
Installation and Configuration Checklist