Handling inbound calls while dialed-up

[Travis Roy]

> Do the CID tones only come through if you pay the Verizon tax for
> CID, or, are they always there, and if you have something to
> interpret them, you can, without paying that tax?

It's done at the phone switch, if you don't pay for it, it's not turned on.

You can tell if you have it, if you pick up the phone just after the first
right you sometimes get this static and that's the callerID info (comes
inbetween the first and second ring)