Enable and disable external phone ringing

Okay, so I got a request yesterday from a possible client. He wants calls to his desk to ring on his cell phone simultaneously. No big deal. BUT…he wants to be able to call in from his cell phone and disable or enable that feature at his convenience. Any thoughts?

There’s a feature code to enable/disable follow me. This can be done from external either by DISA or Misc Application.

Yeah. I found it. Let me play a little bit.