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

PreviousDNC Blocking

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