If you still want to allow 7-digit dialing and have a local 88X prefix, or if your dialplan allows 10-digit calls without a leading 1, then yes, you'll need a timeout. Or make it 9-988 until they pass another law.
I think they already did: https://www.fcc.gov/consumers/guides/ten-digit-dialing Relevant excerpt:
If your company uses a PBX or VoIP phone system, you may need to update or reprogram it for 10-digit dialing. The transition to 10-digit dialing must be completed by July 15, 2022.
On Mon, Jul 18, 2022 at 2:20 AM Jay Hennigan <jay at west.net> wrote:
On 7/17/22 21:19, Hunter Fuller wrote:
We operate a system with the "dial 9" scheme (apparently "useless" according to other posters - a truly insightful attitude that I love to see on this list),
It's not unusual in old-school PBXs and wireline POTS where digits are processed serially. With cell phones dialing is en-banc with a SEND button so digit patterns no longer need to be unique. See note on en-banc dialing below.
so I can say that the expectation definitely is NOT for people to dial 9911. In fact, there is a whole law about it, which, like many, is written in blood: https://www.fcc.gov/news-events/podcast/personal-story-behind-karis-law
This did take some special programming, however. The leading 9 is a trunk access code and should return a second (often different sounding) dial tone. The law to which you refer is because of PBXs that weren't specially programmed to re-insert the stripped "9" and send the call on its way. The original expectation was "Seize an outside line (by dialing 9) wait for dial tone, dial 9-1-1."
When I was programming Mitel PBXs back in the day, I ensured that both 9-11 and 9-911 would get routed to 9-1-1 regardless.
The difference is, if someone picks up a phone and dials 911, they want 911. They don't want an "outside line" so that they can dial a NANP 10-digit number beginning in 11, because no such number exists. The problem is, such numbers DO exist that begin with 88, so, we are in a bit of a pickle there. It seems the only solution is to do a timeout... yeesh. (Unless I'm missing something.)
Kinda, sorta. 7-digit local dialing is supposed to have been phased out, with all NANP numbers represented as 1+NPA-NXX-XXXX.
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.
Dialing 911 directly (not 9911, but just 911) has always worked here, long before Kari's Law, and it works without delay, as it should. I'd love to make 988 work the same way but I'm just not sure how to accomplish that.
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.
If you still want to allow 7-digit dialing and have a local 88X prefix, or if your dialplan allows 10-digit calls without a leading 1, then yes, you'll need a timeout. Or make it 9-988 until they pass another law.
Note: In fact, en-banc cell dialing broke a few advertisements where a word was spelled longer than 7 digits. For example, "Dial 1-800-HARDWARE" worked fine from a landline or (with prepended 9) from a PBX. As soon as the digits 1-800-427-3927 were dialed, the call would complete. With a cell phone, however, the number sent is 1-800-427-39273 which doesn't match a valid number and the call would be rejected. Some cellular carriers have worked around the issue and truncate long strings to match the NANP.
-- Jay Hennigan - jay at west.net Network Engineering - CCIE #7880 503 897-8550 - WB6RDV _______________________________________________ VoiceOps mailing list VoiceOps at voiceops.org https://puck.nether.net/mailman/listinfo/voiceops