Re: Local 10-digit dialing? [Telecom]

Adam Kerman wrote:00

>>Anth>>To this day, in the overlaid areas with mandatory 10d home NPA >>dialing, the 1 dialing prefix is still mandatory. >But remember that NOT ALL of northern Illinois (or northwestern Indiana) >are yet on a mandatory (1+)ten-digit dialing format, since the 708/464 >overlay and the 312 & 773 / USA (872) overlay have NOT yet taken effect. >NANPA hasn't even worked out any dates with the Illinois Commerce >Commission or the telephone industry doing business in the Chicago metro >area for such overlays and (1+)ten-digit mandatory.

Checking PL-195, which announced the overlay code assignments years in advance, there's a 30-day notice period before assigning the first prefix in the overlay code upon exhaust of all existing codes. Hm. They haven't even assigned test numbers.

Checking PL-309 and 296, area code 219 uses 1 as a toll barrier. Local calls (both home and foreign NPA) do not use "1" but all toll calls require 1 plus 10 digits. Foreign NPA local calls are 10 digit. So with care, it is possible to avoid confusion without using 1 for all calls.

It doesn't say if local home NPA can be dialed as 10 digits or if local or foreign NPA can be dialed as 1+10 digits permissively.

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Adam H. Kerman
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