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Newsgroups: comp.dcom.telecom
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Message-ID: <8804291646.AA06018@uunet.UU.NET>
Date: 29 Apr 88 16:35:06 GMT
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To: comp-dcom-telecom@uunet.uu.net
Path: bbn!bbn.com!levin
From: levin@bbn.com (Joel B Levin)
Newsgroups: comp.dcom.telecom
Subject: Re: Exchanges that look like area codes
Keywords: N0X N1X excahnges alternate theory
Message-ID: <24064@bbn.COM>
Date: 29 Apr 88 16:35:01 GMT
References: <8755@eleazar.Dartmouth.EDU>
Sender: news@bbn.COM
Reply-To: levin@powell.BBN.COM (Joel B Levin)
Organization: BBN Communications Corporation
Lines: 22


In article <8755@eleazar.Dartmouth.EDU> marston.UUCP@eleazar.UUCP (David Marston) writes:
: . . . anyone
:calling from outside the 212 area code would dial 1-212-603-xxxx to get
:this firm and there would be no ambiguity. People within 212 would ALL
:dial 603-xxxx, just seven digits, because any number in 212 can reach any
:other number in 212 without dialing 1 first. If a New Yorker dials 1-603-,
:you know that 7 more digits will follow and the call is destined for NH.

The point is, however, that some places, like Maryland for instance,
do not use a prefix 1 to identify toll calls.  For those places, the
only way to distinguish a local call to the 603 exchange from a long
distance call to New Hampshire is by waiting N seconds after the 7th
digit to see if there will be an 8th.  If not, it puts through the
local call; otherwise it just keeps collecting digits.

	/JBL



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