Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!pacific.mps.ohio-state.edu!linac!att!pacbell.com!lll-winken!telecom-request From: mitel!Software!grayt@uunet.uu.net (Tom Gray) Newsgroups: comp.dcom.telecom Subject: Re: Hidgon an Expert on 2600 Hz? Message-ID: Date: 28 Mar 91 21:18:14 GMT Sender: Telecom@eecs.nwu.edu Organization: Mitel. Kanata (Ontario). Canada. Lines: 26 Approved: Telecom@eecs.nwu.edu X-Submissions-To: telecom@eecs.nwu.edu X-Administrivia-To: telecom-request@eecs.nwu.edu X-Telecom-Digest: Volume 11, Issue 252, Message 8 of 11 >In article forrette@cory.berkeley.edu >(Steve Forrette) writes: >> John Higdon writes: >>> Hence, 2600 Hz would serve as both supervisory and signaling carrier. >>> It was called "SF" (single frequency). >> You seem to know an awful lot about what 2600Hz can be used for! :-) For those of you who want to know how the 2600hz system works, you can obtain the CCITT international standard on R1 signalling. This includes a complete description of how the system works. You may also obtain the AT&T publication "Notes on the Network" which has a more practical description of this system. All of this information is totally public. It is an industry standard. As a matter of fact, I know about it beacuse I designed an SF trunk. Probably USENET is distributed to some places over this trunk type of my design. I obtained all the inforamtion I needed from "Notes on the Network" which AT&T was quite pleased to sell to anybody with the required amount of money. Tom Gray - have SF trunk for hire - will travel