Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!seismo!rutgers!sri-spam!ames!ucbcad!ucbvax!sdcsvax.ucsd.EDU!ucsdhub!jack!man!nu3b2!rwhite From: rwhite@nu3b2.UUCP Newsgroups: comp.dcom.telecom Subject: Submission for comp-dcom-telecom Message-ID: <8706250758.AA04222@sdcsvax.UCSD.EDU> Date: Thu, 25-Jun-87 03:25:29 EDT Article-I.D.: sdcsvax.8706250758.AA04222 Posted: Thu Jun 25 03:25:29 1987 Date-Received: Sat, 27-Jun-87 09:46:46 EDT Sender: daemon@ucbvax.BERKELEY.EDU Distribution: world Organization: The ARPA Internet Lines: 50 Approved: telecom@buit1.bu.edu Path: nu3b2!rwhite From: rwhite@nu3b2.UUCP (Robert C. White Jr.) Newsgroups: comp.dcom.telecom Subject: Re: Incoming Phone Calls Summary: busy signal,sort of. Message-ID: <775@nu3b2.UUCP> Date: 25 Jun 87 07:25:29 GMT References: Organization: National University, San Diego Lines: 39 In article , WBD.MDC@OFFICE-1.ARPA (William Daul / McDonnell-Douglas / APD-ASD) writes: > This may end up sounding like a really dumb question but... > > If all the lines in a neighborhood are being utilized and someone tries to call > into that area to a phone that is NOT being used what (if anything) will > happen? Will they get a busy signal? It is not a dumb question, but there is something I don't think you understand. EVERY phone number is on it's own DEDICATED pair running all the way to the Central Office Switch servicing that area [often but not always the entire prefix {first 3 of the standard 7 digits} the only common execption to this is those who have purchased a "foregn exchange" If every circut comming into a CO [Central Office] is busy, and you are calling from another CO, or your CO's swithch is not capable of compleeting enough connections to support your outgoing call you will recieve the "fast" busy signal . This is the "Circut Overload/Insufficient Access Rights" signal and is heard mostly on mother's day /snicker ;-). Any other busy signal or condition is either a mundane destination busy [Or system all f**ked up signal] All the lines in a CO can be busy, all the connections in a CO switch can be busy, but the only way all "the lines going into a neighborhood" can be busy is if every number has at least one instrument "off-hook" If it often takes several minutes for the tone generator to give you dial-tone, call your Opperating Company and tell them to buy a bigger switch!!! Robert. Disclaimer: My mind is so fragmented by random excursions into a wilderness of abstractions and incipient ideas that the practical purposes of the moment are often submerged in my consciousness and I don't know what I'm doing. [my employers certainly have no idea]