Master DNL Class4
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LERG Blocking

The Telcordia LERG database tells you many information of a phone number and the important data we get for call blocking purposes are :
  • Country of the Phone Number
  • Operator Type of the Phone Number ( ex. Wireless, Landline, etc )
You can use the LERG blocking under "Auto Call Block" section in the Ingress Trunk setting to block calls by ANI or DNIS.
The selection provided by Class 4 Fusion are as follows:
  • Block non US ANI
  • Block Wireless ANI
  • Block Wireless DNIS
  • Block Toll Free ANI
  • Block Invalid +1 ANI
  • Whitelist +1 Country for ANI