From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: ** X-Spam-Status: No, score=2.1 required=5.0 tests=BAYES_40,INVALID_MSGID, REPLYTO_WITHOUT_TO_CC autolearn=no autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 103376,5495dac456fa22ef X-Google-Attributes: gid103376,public From: Marin David Condic Subject: Re: Processor Synchronization Date: 1999/01/21 Message-ID: <36A73E16.8E663246@pwfl.com>#1/1 X-Deja-AN: 435235288 Content-Transfer-Encoding: 7bit Sender: condicma@bogon.pwfl.com References: <36A509DB.95F62C0B@pwfl.com> <36A51F3A.2207F91@west.raytheon.com> <36A602E0.DA6E298F@pwfl.com> Content-Type: text/plain; charset=us-ascii Organization: Pratt & Whitney Mime-Version: 1.0 Reply-To: diespammer@pwfl.com Newsgroups: comp.lang.ada Date: 1999-01-21T00:00:00+00:00 List-Id: Sune Falck wrote: > > Just a pointer. > > Digital transmisson systems for telephony have to stay in sync over long > distances. > > PCM systems such as SONET, SDH (Syncrounous Digital Hiearchy) and PDH > (Plesiosynconius Digital Hiarchy) are using methods for clock distribution > and syncronsiation that may be of interest. The time slots occur every 125 > microsecond and they must stay in sync in the whole network. > > /Sune Falck A long time ago, in a galaxy far, far away - New Jersey, that is to say - I worked for a company that at the time was called Singer Electronic Systems. (It changed names two or three times while I worked there. I don't know who it is now.) We did things similar to this. We regularly lost people who took jobs at Bell Labs because the skills needed were similar. This process of net entry and synchronization is something like what we do now to sync up both channels of our control. Would you know of any published material that talks about techniques for net entry - which isn't classified? MDC -- Marin David Condic Real Time & Embedded Systems, Propulsion Systems Analysis United Technologies, Pratt & Whitney, Large Military Engines M/S 731-95, P.O.B. 109600, West Palm Beach, FL, 33410-9600 Ph: 561.796.8997 Fx: 561.796.4669 ***To reply, remove "bogon" from the domain name.*** "Airplanes are interesting toys but of no military value." -- Marechal Ferdinand Foch, Professor of Strategy, Ecole Superieure de Guerre.