At 10:19 AM 24/11/96 -0500, you wrote:
>Are the caller id tones always transmitted or do the local phone companies
>block that info unless you buy there service?  Are you only renting the box
>when you subscribe to their service?
>
>Mark A. Corio

In Mexico the phone company blocks the signal, only subscribers get them.
And the decoders are bought anywhere you want (even Radio Shack). I guess
it's the same everywhere caller ID is offered since in digital phone
centrals it is easy to route diferent services.

Rogerio