It’s basically to save users from having to enter a bunch of numbers. Our gates have an intercom that dials a virtual extension which in turn is forwarded to a ring group. When the people at that ring group go to lunch they forward the virtual extension to another ring group. When they come back from lunch they forward the virtual extension to the original ring group.
Yes, we could just put everyone in a ring group and people could ignore the call unless it rings X number of times. Yes, we could even have the first ring group fail over to the next ring group after a few rings. But this is not what my users want.
So that said, to forward the virtual extension they dial *93, wait for the prompt, enter the virtual extension then #, then enter the new ring group then #. Not hard, but if i can do it all in one button that’s even better.