Hi there and welcome
Can you tell me please which model vTech you have? It should be printed on the underside of the base unit.
this phone does not have the option, but we can see if your provider does. Who is your phone provider?
You said you dialed *61phonenumber*30# ***** is correct so it should have worked
If you use the default 20 seconds which is
*61phonenumber# ***** hang up
What then happens when your called?