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From: silber@tcgould.tn.cornell.edu (Jeffrey Silber)
Newsgroups: comp.dcom.telecom
Subject: Re: Tanks near Telephone Poles
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Date: 8 Aug 89 12:27:47 GMT
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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