A new intercom system was installed in my building and it won't connect with my phone. When you try my number on the key pad a message says this number cannot accept incoming calls. My landlord says it's my phone.
Turns out it was an issue with the intercom system. They brought in a technician, he changed one letter in my name and it worked. They still weren't sure why. He was also able to turn up the intensity of the DTMF signal.
Thanks for the help!