![]() If you wish to allow calls without caller ID, there will also need to be a or blank Translation Pattern. The Calling Search Space routes the call back to the phone’s partition for normal call routingħ) Some calls may arrive without caller id or a restricted caller ID. The ! in the ‘Filter_List’ Partition is used to route any calling party number that is not specifically defined as a blocked number. If the Directory Numbers are +E.164, you will also need to create a /+! translation pattern in order to reach the called directory number. Set the Calling Search Space to route non-blocked calls to their destination. ![]() NOTE: The ! pattern is used to match all incoming called parties in order to route the calls into the ‘Filter_List’ Partition for call ing party matching.Ħ) Create a Translation Pattern ! in the ‘Filter_List’ Partition. Set the Calling Search Space to ‘To_Filter_List’ and check the ‘Route Next Hop By Calling Party’. NOTE: The ‘Gateways’ Calling Search Space must not contain any partitions that contain directory numbers, otherwise, calls will be routed directly rather than through the calling party filters.Ĥ) Add the ‘Filter_List’ partition to the ‘To_Filter_List’ Calling Search Space.ĥ) Create a Translation Pattern ! in the ‘Inbound_Calls’ Partition. See Figure 1 above for call flow.ġ) Create two Partitions called ‘Inbound_Calls’ and ‘Filter_List’.Ģ) Create two Calling Search Spaces called ‘Gateways’ and ‘To_Filter_List’.ģ) Add ‘Inbound_Calls’ partition into the ‘Gateways’ Calling Search Space. Only a few Partitions and Calling Search Spaces are necessary to create a call blocking “Filter list” of calling numbers. ![]() If the call ing party number does not match a Translation Pattern number to block, then CUCM will continue processing the call and route the call to the destination directory number. The called number cannot be in the partition.) After matching an inbound Translation Pattern that has the “Route Next Hop by Calling Party Number” check box selected, CUCM will perform digit analysis on the call ing party number and thus allow the administrator the ability to block the call if matched (in order for the restricted calling party feature to work, all target directory numbers must be contained in a partition reachable through a Calling Search Space. In CUCM 8.0, there is a new parameter on Translation Patterns called “Route Next Hop By Calling Party Number”. 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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