Руководство По Установке для Cisco Cisco IPCC Web Option

You use the Server Heartbeat Interval (sec) field on the Unified CM to set the time interval
between heartbeats. The default is 30 seconds; Cisco recommends changing this to the minimum
value of 5.

To change the heartbeat interval:

From the Start menu, select Programs -> Cisco JTAPI -> JTAPI Preferences.

Set the Advanced -> Server Heartbeat Interval (sec) field to 5 seconds.

If you are using Outbound Option, you can provide fault tolerance by upgrading from a simplexed
Outbound Option controller to a duplexed Outbound Option controller. For instructions, see
the  Upgrade Guide for Cisco Unified System Contact Center Enterprise & Hosted.

Installation and Configuration Guide Cisco Unified System Contact Center Enterprise 7.5(1)