Path: utzoo!utgpu!watmath!att!dptg!rutgers!cs.utexas.edu!sun-barr!newstop!texsun!texbell!vector!telecom-gateway From: silber@tcgould.tn.cornell.edu (Jeffrey Silber) Newsgroups: comp.dcom.telecom Subject: Re: Tanks near Telephone Poles Message-ID:Date: 8 Aug 89 12:27:47 GMT Sender: news@vector.Dallas.TX.US Reply-To: Jeffrey Silber Organization: Cornell Theory Center, Cornell University, Ithaca NY Lines: 17 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 281, message 6 of 10 In article Jeff Wasilko writes: >I've seen compressed gas cylynders near poles and I've always wondered what >purpose they are used for? Could anyone shed some light on this? Major phone trunks are pressurized, to prevent moisture in the cables. The pressurization is done at the CO. I've always assumed that where they have had to cut a trunk to repair it they put the tanks (nitrogen, I believe) in place to provide temporary pressurization. -- "A billion here, a billion there, and pretty soon you're talking real money." --Sen. Everett Dirksen Jeffrey A. Silber/silber@tcgould.tn.cornell.edu Business Manager/Cornell Center for Theory & Simulation in Science & Engineering