As Brian stated, the cable properties of the copper makes a difference. In terms of the Cisco device, this is the only thing I have seen recently that talks about a specific distance. In this case it is longer than is usually advertised (3.4km) for run-of-the-mill 26 AWG wire and it's only with a certain type of card (VIC3-2FXS-E/DID). http://www.cisco.com/c/en/us/solutions/collateral/enterprise-networks/empowered-branch-solution/application_note_c27_461821.html
Some of the more typical distances for non-specialty cards are mentioned here: https://communities.cisco.com/docs/DOC-10122 In the limited applications I've encountered where it was not possible to extend the IP network but it was required to provide an analog extension, the recommendation was to run fiber and utilize a pair of fiber-to-POTS media converters on either end. I saw one instance where several thousand feet of copper was used because it was the only thing available, and it seemed to work. But no one was able to tell us the type of cabling, and we didn't really have confidence it would work. On Wed, Jun 22, 2016 at 4:55 PM, Brian Meade <[email protected]> wrote: > What type of cabling is it? Really comes down to the loop resistance. > > On Wed, Jun 22, 2016 at 4:22 PM, Louis Koekemoer (ZA) < > [email protected]> wrote: > >> I need this for the mining industry. They currently have a old Nortel and >> claim it does about 24km. I now need to try and match that on Cisco. >> >> >> >> Sent from my Samsung device >> >> >> -------- Original message -------- >> From: Brian Meade <[email protected]> >> Date: 22/06/2016 21:55 (GMT+02:00) >> To: "Louis Koekemoer (ZA)" <[email protected]> >> Cc: [email protected] >> Subject: Re: [cisco-voip] Max length for analogue >> >> >> >> It's different per device. FXS port is different than ATA186 which is >> different than VG224. Do you already have an FXS port or ATA you're >> planning to use? >> >> Here's calculations for the ATA186- >> https://communities.cisco.com/docs/DOC-10122 >> >> On Wed, Jun 22, 2016 at 3:50 PM, Louis Koekemoer (ZA) < >> [email protected]> wrote: >> >>> >>> >>> Hi all, >>> >>> What would be the maximum length one will be able to run an analogue >>> extension or what device can one use to extend the length? >>> >>> Regards >>> >>> Louis >>> >>> >>> >>> Sent from my Samsung device >>> >>> >>> This email and all contents are subject to the following disclaimer: >>> "http://www.dimensiondata.com/emaildisclaimer"; >>> <http://www.dimensiondata.com/Global/Policies/Pages/Email-Disclaimer.aspx> >>> >>> _______________________________________________ >>> cisco-voip mailing list >>> [email protected] >>> https://puck.nether.net/mailman/listinfo/cisco-voip >>> >>> >> >> >> itevomcid >> > > > _______________________________________________ > cisco-voip mailing list > [email protected] > https://puck.nether.net/mailman/listinfo/cisco-voip > >
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