Find the ringer volume control on your phone, and turn it all the way up. Place a test call to your phone number from your cell phone, or ask someone else to call you.
If call forwarding is turned on, you won’t be able to answer any calls.
After you hear a dial tone on your phone, try disabling call forwarding. Most customers can press 7 3 to turn off call forwarding. Place a test call to your phone number from your cell phone, or ask someone else to call you.