If your landline phone service provider offers a call block feature, you can use it to unblock a specific number. Here's how:
Dial *60 and follow the voice prompts to remove specific numbers. *60 code to unblock number on landline
Dial *60, press , dial the 10-digit number, and press * again to confirm. Unblock All Numbers *80 If your landline phone service provider offers a
Note: Codes vary by country and carrier; consult the provider’s feature guide. dial the 10-digit number