On Mon, Jul 18, 2022 at 1:19 AM Jay Hennigan <jay at west.net> wrote:
Kinda, sorta. 7-digit local dialing is supposed to have been phased out, with all NANP numbers represented as 1+NPA-NXX-XXXX.
But, speaking of en-banc dialing on cell phones, do you find that users typically enter the 1? I certainly don't. 10-digit is the most common form I see. We don't support 7 digit (we killed it at the same time Ma Bell did in our area).
This means that after your trunk access 9, you should expect a 1 (followed by ten digits for a regular phone number), a 0 for operator or 011 international, or a three-digit code starting with 2 or 9 that until this week always ended in 11.
Program 88 as a sequence to re-insert the stripped 9 and send immediately on trunks accessed by a 9, just like you do with 11.
The problem is, right now, you are right. If someone dials 9 then 8, they get fast busy immediately (because there should have been a 1). But after the change you mention, if they are trying to dial the very common toll-free NPA 888 and forget the 1, they will instantly be talking to the suicide hotline.