Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!iuvax!cica!ctrsol!samsung!rex!wuarchive!texbell!attctc!vector!telecom-gateway From: lars@salt.acc.com (Lars J Poulsen) Newsgroups: comp.dcom.telecom Subject: Re: 8-Digit Phone Numbers vs. More Area Codes Message-ID: Date: 16 Nov 89 20:09:54 GMT Sender: news@vector.Dallas.TX.US Reply-To: lars@salt.acc.com (Lars J Poulsen) Organization: Advanced Computer Communications, Santa Barbara, California Lines: 28 Approved: telecom-request@vector.dallas.tx.us X-Submissions-To: telecom@eecs.nwu.edu X-Administrivia-To: telecom-request@vector.dallas.tx.us X-TELECOM-Digest: volume 9, issue 518, message 9 of 11 >In article , peter%ficc@uunet.uu.net >(Peter da Silva) writes: >> After all the exchanges are on NXX, and after we've used up the NXX >> exchanges, then what's the plan? 8- or 9- digit local numbers, or >> 4-digit exchanges, or partitioning Zone 1, or what? In article , nvuxr!deej@bellcore.bellcore.com (David Lewis) writes (in response to a question from Peter da Silva): >[Even after all NPA have switched to NXX exchange codes, the remaining > NPA codes will be exhausted around 1995.] The >plan then is to go to interchangeable NPA codes -- so that the syntax >for a phone number will be NXX-NXX-XXXX. That will provide for 640 >new NPA codes, whereas there are currently 152 available N{0/1}X NPA >codes available. That should keep things quiet for some time, >considering there will be (approximately -- I haven't removed codes >like N00 and N11) 6.4x10^9, or 6.4 billion phone numbers available in >North America. Can this be accommodated without taking the whole system to ESS ? I would expect that when this happens, you will ALWAYS need to dial the area code, even for a local call. (Even though this may be handled by your instrument by then). / Lars Poulsen (800) 222-7308 or (805) 963-9431 ext 358 ACC Customer Service Affiliation stated for identification only My employer probably would not agree if he knew what I said !!