Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ames!netsys!vector!nobody From: harriss@Alliant.COM (Martin Harriss) Newsgroups: comp.dcom.telecom Subject: Re: 1+areacode Message-ID: Date: 31 Jan 89 17:40:17 GMT Sender: chip@vector.UUCP Lines: 14 Approved: telecom-request@vector.uucp X-Submissions-To: telecom@bu-cs.bu.edu X-Administrivia-To: telecom-request@vector.uucp X-TELECOM-Digest: volume 9, issue 43, message 2 I think there may have been another reason for prefixing area codes with '1'. On exchanges which were not register controlled, it was neccesasry to discriminate between a local and long distance call at the beginning of the dialled number. On a step by step strowger switch, for instance, you would dial 1 and be stepped to the 1st level. Connected to this level would be trunks to your LD switching center which would suck in all the subsequent digits and route the call appropriately. This scheme would also work for calls within your area code which were not local. I'm not sure under what circumstances this was done, but I'm pretty sure that it did happen sometimes. Perhaps someone on this newsgroup knows more? Martin Harriss {linus,mit-eddie}!alliant!harriss