You cannot unblock this from your phone. The recipient must go into their landline portal or dial *60 (on most US carriers) and remove your number.
You cannot use star codes. You must log into the Xfinity Connect web portal or the app. Look under "Voice" > "Settings" > "Call Screening" > "Blocked Numbers." The Human Factor: Why You Are Probably Wasting Your Time Let’s get psychological. Most people who search "how to unblock a number landline" are trying to reach someone who doesn't want to be reached. They think there is a magic sequence—*87, *82, #31#—that will override the recipient's will. how to unblock a number landline
Here is the deep, technical, and practical guide to reclaiming your connection. First, unlearn everything your smartphone taught you. On a mobile device, you control the block list. On a traditional landline (POTS—Plain Old Telephone Service), the person who blocked you controls everything. You cannot “force” an unblock from your side. You cannot unblock this from your phone
Have you ever been blocked by a landline? Did the star codes work for you, or did you have to resort to snail mail? Let us know in the comments below. You must log into the Xfinity Connect web portal or the app
Send a letter. Send an email. Ask them to check their cordless phone’s base station for a "Blocked Calls" menu. There is no remote code for this. The Deep Technical Play: The "Anonymous" Reset If you are trying to unblock your own landline because you blocked a number accidentally, you have power. Unlike mobile phones, landlines often use old school star codes for management.
If you call from a friend's phone and it goes through, but yours doesn't, it's a local block on their physical machine.