If MGCP gateway is used with the Older version of CUCM which is below 8.x the only way to block unwanted calls is based on the DNIS information. If an H.323 gateway is used, incoming calls can be blocked based on either Automatic Number Identifier (ANI) or Dialed Number Identification Service (DNIS) information, or both, through translation rules on the gateway (GW) configuration.įor an example of how to block calls based on specific calling numbers (ANI), refer to the Call Blocking Specific Calling Numbersįor an example of how to block calls based on specific called numbers (DNIS), refer to the Call Blocking Specific Called Numbersīlock calls based on DNIS when CUCM is using MGCP gateway The CSS “block_certain_ANI-calls_CSS” should see following translations:ġ) ! translation pattern with a CSS contains “All Phones partition” – This allows calls to route normally into the cluster.Ģ) 8001201 Blocking Pattern – Block calls coming from caller ID 8001201ģ) 8601202 Blocking Pattern – Block calls coming from caller ID 8601202īlock calls based on ANI and DNIS when CUCM is using H.323 gateway “Route Next Hop By Calling Party” checked which changes the behavior to route the calls based on Calling number not the called number to next Calling search space called -> “block_certain_ANI-calls_CSS” -> which matches following transalation patterns shown as an example, MGCP GW -> inbound calling CSS called “Screen_all-incoming_calls_ANI_CSS” -> match to Translation pattern ! which has In the Older version of CUCM which is below 8.x, the only way to block unwanted calls is based on the DNIS information.īlock calls based on ANI in CUCM 8.x when CUCM is using MGCP gateway If an MGCP gateway is used, from CUCM 8.x and later versions incoming calls can be blocked based on ANI or Calling Number.When CUCMs are using MGCP gateways instead of H.323 gateways blocking calls based on ANI or Calling Number becomes difficult or not possible in older Cisco Unified Communications Manager (CUCM) versions which is below 8.xįrom CUCM 8.x and later versions this task can be accomplished by using “Route Next Hop By Calling Party” If you have multiple 800 or 900 numbers to the same destination, DNIS tells which number was called. It's a common feature of 800 and 900 lines. DNIS (Dialed Number Identification Service) is a telephone service that identifies for the receiver of a call the number that the caller dialed.ANI (Automatic number identification) is a feature of telephony intelligent network services which permits subscribers to display or capture the telephone numbers of calling parties.This document covers the Technotes for Blocking calls in Cisco Unified Communications Manager (CUCM) 8.x and later based on Automatic Number Identification(ANI) when CUCM is using MGCP Gateway.
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