Path: utzoo!utgpu!watmath!att!pacbell!ames!mailrus!tut.cis.ohio-state.edu!brutus.cs.uiuc.edu!wuarchive!swbatl!texbell!vector!telecom-gateway From: vances@xenitec.uucp (Vance Shipley) Newsgroups: comp.dcom.telecom Subject: Re: Pair Usage (was Color Coding) Message-ID: Date: 7 Aug 89 18:43:20 GMT Sender: news@vector.Dallas.TX.US Organization: Linton Technology - SwitchView Lines: 23 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 279, message 1 of 9 In article Mike Morris writes: >Likewise the GTE Sierra Madre exchange (818-355) (which went from SxS to EAX >a couple of years ago) was the only one I ever saw which allowed the user to >lease a pair to the CO and have a hunting defeat switch on the side of the >receptionist's phone. The customer was a MD and had 3 incoming lines and one >answering machine for after-hours calls. When the office was closed, >the machine was on and hunting was defeated. ... This is/was quite common here in Ontario. 'Break hunt' is a tarriffed service offering. In a DID situation it is quite common to have a "power fail" pair back to the central office. When the pbx is down (power fail, reload, etc.) the central office is alerted by the lack of (or presence of, depending on local engineering) -48 volts on this pair. Incoming calls for the DID lines are either presented with overflow or re-routed to any incoming trunks they have. Vance Shipley uucp: ..!{uunet!}watmath!xenitec!vances Linton Technology - SwitchView INTERNET: vances@egvideo.uucp 180 Columbia Street West (soon) vances@xenitec.uucp Waterloo, Ontario fax: (519)746-6884 CANADA N2L 3L3 tel: (519)746-4460