David_W_Tamkin@cup.portal.com (08/03/88)
Central Telephone of Illinois, at least in its Des Plaines and Park Ridge districts in area code 312, gives ANI by dialing 290. I came across it by chance. It seems that they don't feel that the function is anything that needs to be hidden. I've even tried it on COCOT's. They required that I dial four dummy digits after the 290, since they demanded seven digits before sending your dialing on to the telco, but Centel ignored the extra four, gave me the number I was dialing from (frequently not printed on the face of a COCOT), and dis- connected. The COCOT's returned my money.
lars@acc.arpa (08/06/88)
> From: David_W_Tamkin@cup.portal.com > Subject: a live ANI (automatic number identification) code > Date: Wed Aug 3 22:00:34 1988 > > Central Telephone of Illinois, at least in its Des Plaines and Park Ridge > districts in area code 312, gives ANI by dialing 290. I tried this, from my GTE line (805) 682-xxxx (Santa Barbara, CA). 290 yields (ring, ring, redirect, recording:) "We're sorry ... cannot be completed". 1-312-290-1234 yields (redirect, recording:) "Your call cannot be completed ... 818-4T". Since 290 does not require 7 digits before the rejection from the local switch, it seems like this prefix gets special handling (or is that true of unassigned prefixes in general ? The long distance call get rejected in the LATA router. Wouldn't it be nifty if it had gone thru ?. / Lars Poulsen