Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!bellcore!texbell!vector!telecom-gateway From: nvuxr!deej@bellcore.bellcore.com (David Lewis) Newsgroups: comp.dcom.telecom Subject: Re: What's a local call? Message-ID: Date: 31 May 89 17:24:24 GMT Sender: news@vector.Dallas.TX.US Organization: Bell Communications Research Lines: 32 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 182, message 7 of 7 In article , blake@pro-party.cts.com (Blake Farenthold) writes: > This seems to me to be another good argument for the "if the calls gonna cost > you HAVE to put a 1 or 0 in front of the number (1-976, 1-512-... 011-44-01)" > if the BOC's and independants would adopt this it would save lotsa people > lotsa headaches.. no more "I didn't know that 976 call cost $30" just teach > the kids not to dial 1+, like my mom did to me. The problem is that 1+ is recommended for use to distinguish 7-digit dialed numbers from 10-digit dialed numbers where interchangeable NPA/office codes are introduced (currently only a few locations; will eventually be very widespread because of code exhaustion). Some 10D calls are "local" calls; some 7D calls are toll calls. Example: You live in Queens (NPA code 718) and are calling someone in Manhattan, 212-NNX-XXXX. It's a "local" call, though. If 1+ means a toll call, the switch has to have some other way of recognizing that 212NNXX is not a home NPA dialed number -- it has to wait and expect more digits after the first 7. So when you call someone in Queens, say at 218NNXX, the switch has to wait four seconds or so in case you're really dialing someone at 218-NXX-XXXX (your buddy in Minnesota). If 1+ means a 10-digit dialed number, the switch can interpret the first digit; if it's a 1, it leaves the tone generator on line until it gets 10D; if it's anything else, it takes the tone generator off line and gets on with call processing after getting 7D. -- =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= David G Lewis "If this is paradise, I wish I had a lawnmower." Bellcore 201-758-4099 Navesink Research and Engineering Center ...!bellcore!nvuxr!deej