3rd Number & Collect Call Blocking
3rd number billing is when a person (who has the authority to do so) wants to charge a call to a number other than the number they are calling from or the number they want to call. If you do not want someone to be able to charge a call to your number, you can restrict that activity by requesting 3rd number blocking for your line. Similarly, if you don’t want to accept collect calls, you can add collect call blocking service to your line. There is no monthly charge for either of these services.