What is dry copper? Dry copper refers to twisted pairs that are not connected to a telephone switch, battery or anything else between customer locations. They are merely cross-connected in between. The term "dry" actually originated over 100 years ago, when batteries were first used to power telephones. A dry pair had no power applied to it from the CO and a "wet" one did. Some folks have been able to implement xDSL via dry copper connection between two sites. By simply placing xDSL modems at each end of the dry copper connection, a xDSL may be possible with little intervention from the perspective of the CO. However, this is a risky method of deploying xDSL, especially asymmetrical versions. The problems occur when there is interference between the dry copper xDSL lines and other lines nearby, such as T1 and POTS. Typically dry copper has been used for low speed alarm circuits. By implementing xDSL service over dry copper, you run the risk of future problems. You may disrupt service at the CO and hence, the CO's customers. Unless you have specifically contracted for this method of xDSL service in advance, beware
> -----Original Message----- > From: Priscilla Oppenheimer [SMTP:[EMAIL PROTECTED] > Sent: Tuesday, August 19, 2003 2:38 PM > To: [EMAIL PROTECTED] > Subject: Re: DSL over Dry Copper [7:74117] > > Uh, what is dry copper? Is it analogous to "dark fiber?" > > Thanks > > Priscilla > > "Chuck Whose Road is Ever Shorte wrote: > > > > ""Dain Deutschman"" wrote in message > > news:[EMAIL PROTECTED] > > > Hi All, > > > > > > Does anyone know if Cisco makes a product similar to the > > Pairgain Campus > > HRS > > > or Celsian G250 LAN Extenders? I want to create a dsl > > connection over dry > > > copper between two sites. Cisco reseller helpline was mildly > > helpfull. > > What > > > are some of you using for this type of situation? > > > > > > I have heard it said that all you need to do is connect a > > couple of 827's > > and you are done. I don't know the specifics.. :-> > > > > http://www.pbs.org/cringely/pulpit/pulpit20010823.html > > > > http://www.isp-planet.com/technology/homebrew_dsl.html > > > > one place I saw said to check out what alarm companies order - > > they use dry > > copper. > > > > or you can use the Long Reach ethernet product from Cisco at > > each end. I'm > > sure there are competitors. > > > > > > > > > > Thanks, > > > > > > -- > > > Dain Deutschman > > > ccnp, css-1, cnss infosec, mcp, cna > > > Data Communications Manager > > > New Star Sales and Service, Inc. > > > **Please support GroupStudy by purchasing from the GroupStudy > > Store: > > > http://shop.groupstudy.com > > > FAQ, list archives, and subscription info: > > http://www.groupstudy.com/list/cisco.html > **Please support GroupStudy by purchasing from the GroupStudy Store: > http://shop.groupstudy.com > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html ********************************************************************** This electronic message together with any attachments is confidential. If you receive it in error: (i) you must not use, disclose, copy or retain it; (ii) please contact the sender immediately by reply email and then delete the emails. Views expressed in this email may not be those of the Airways Corporation of New Zealand Limited ********************************************************************** Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=74144&t=74117 -------------------------------------------------- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
