Pete Van Raalte wrote:

> There are a series of 9xx number that can be dailed into any central
> office.  One of these will result in a ring-back as soon as you hang
> up.  Another will tell you the number (by recorded voice) of the line
> on which you are calling.  (I have used this successfully from a New
> York City payphone by dialing 958.)
 
>  I'm told that each Central Office switch type (eg, ATT 5ESS) has default
> numbers.  Can anyone tell me where to find a list of these 9xx numbers?

> Pete

> Peter Van Raalte                |   Email: [email protected]
> Compliance Engineer             |
> V-Band Corporation              |   Phone: 914-789-5117

Pete, this is more aptly a topic for alt.2600, but why not go the
experimental route? Assuming you avoid 911, that leaves just 99
combinations to try. Keep a log & let us know what you find.

Ed

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