![]() Starting in Cisco Unified Communications Manager v8.0, by using familiar call routing techniques, an administrator can now match and deny a call into their system based on the call ing party number as well as the call ed number. Traditionally, when calls arrive in the Cisco Unified Communications Manager environment, the call is processed based on the call ed party with no routing decision made on the call ing party number. The administrator must understand Partitions, Calling Search Spaces and Translation Patterns. To implement this feature, the administrator must have good knowledge of the existing dialplan, call routing and call flows to be able to implement the caller ID blocking feature. This document is targeted at administrators that are familiar with call routing in the Cisco Unified Communications Manager environment. This application note will describe and illustrate how to set up call blocking using Cisco Unified Communications Manager v8.0 and later. The ability to block calls based on the calling party number is a feature required by many customers to prevent unwanted calls, whether from telemarketer, malicious callers, or others, from reaching their end users. Blocking Inbound calls to Cisco Unified Communications Manager based on Caller IDĪpplication Note: Blocking Inbound calls to Cisco Unified Communications Manager based on Caller ID. ![]()
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