annala%neuro.usc.edu@usc.edu (A J Annala) (08/14/90)
The number 1223 answers with a digital voice giving a single digit (always 0 when I call -- presumably related to the line type) and the number of the switched voice pair originating the call in the Los Angeles Airport area. However this number does not work on my campus CENTREX system or in the downtown Los Angeles area. I would like to assemble a list of similar numbers to call to get a positive identification on a switched voice grade line when I punch down cross connect wires from the telco demark to modems in my computer room and customer sites around town. As a matter of curiosity, I would be interested in learning about how sucxh numbers are allocated throughout the country, what the typical numbers are in local regions, and whether there are any other commonly supported numbers (e.g. ringback) for installation assistance? Thanks, AJ