I would say miles. DSL limits for equiv bandwidth is around 3 miles if I recall correctly.
j On Fri, 3 Oct 2008, Eric Fort wrote: > without any other hardware than 2 bare ass pci based t1/e1 cards wired back > to back how far can one go between them? additional hardware defeats the > purpose. > > Eric > > On Fri, Oct 3, 2008 at 3:01 AM, Gordon Henderson > <[EMAIL PROTECTED]<[EMAIL PROTECTED]> > > wrote: > > > On Fri, 3 Oct 2008, Eric Fort wrote: > > > > yes, more than 300 meters (longer than copper based ethernet allows). Yes > >> to E1, as I understand it, it's just a config change on many cards anyway. > >> I'm specificly looking at pci based t1/e1 cards because I'm finding single > >> port cards on ebay going for 100-200 usd. in some cases I may want to > >> drive > >> a channel bank at the far end, thus t1/e1. anyone have experience on how > >> far these pci based cards will drive when wired back to back? > >> > > > > Looks like this is the thing then: > > > > http://www.blackbox.com/Catalog/Detail.aspx?cid=381,1452,1468&mid=5362 > > > > Just over $1000 a pair... > > > > couple that with an OpenVox PRI card at one end, channel bank at the other, > > and off you go... > > > > Gordon > > > > > > > >> Eric > >> > >> On Thu, Oct 2, 2008 at 11:34 PM, Gordon Henderson < > >> [EMAIL PROTECTED] <[EMAIL PROTECTED]> < > >> [EMAIL PROTECTED] <[EMAIL PROTECTED]>>> wrote: > >> > >> On Thu, 2 Oct 2008, Eric Fort wrote: > >>> > >>> I presently need to connect a few channels of voice and data between > >>> > >>>> multiple locations where I own the copper between them. Each location > >>>> exceeds 300M from any other location. I'm thinking of generating T1's > >>>> and > >>>> running those between locations. If I use PC based cards wired back to > >>>> back > >>>> (I can do that, right?) what kind of distance can I expect to be able to > >>>> span without needing repeaters? What inexpensive cards can you > >>>> recommend > >>>> for use with asterisk? I'm considering either digium or sangoma. Would > >>>> I > >>>> get any better performance if I used a sync-serial card connected to a > >>>> separate csu/dsu? > >>>> > >>>> > >>> 300 metres, right? (not 300 miles?) > >>> > >>> Why stop at T1? Go for E1 :) with the right kit at each end you ought to > >>> be > >>> able to get 2Mb/sec or more. (distance depending) > >>> > >>> Personally, I'd go for a technology that gave me Ethernet at each end - > >>> then it makes it much easier to mix voice and data - But using something > >>> like a sync. modem and line driver then you need a media converter of > >>> some > >>> sorts at each end which might bump up the cost - at the savings of the E1 > >>> card in the PC though. Last time I had bare copper to play with (a BT > >>> EPS8 > >>> circuit) I had a 2Mb modem at each end going into a Cisco 2600 which was > >>> running CHDLC over the link and acting as nothing more than a dumb media > >>> converter to give me Ethernet at each end. This was 6 years ago though. > >>> > >>> Ah, Looks like the technology has improved somewhat: > >>> > >>> http://www.blackbox.com/Catalog/Detail.aspx?cid=381,1452,1468&mid=5261 > >>> > >>> From the UK site: > >>> > >>> Or even: > >>> > >>> http://www.blackbox.com/Catalog/Detail.aspx?cid=425,1423,1424&mid=4946 > >>> > >>> (same thing from the UK site:) > >>> > >>> > >>> > >>> http://www.blackbox.co.uk/solutions/display.asp?cs=dvh&id=1&doc=lb300a-r2&tx=LAN&sx=Network%20Appliances > >>> > >>> You need a pair, obviously... > >>> > >>> Hm. US site is $305, UK ?253. Rip-off Britain again by the looks of > >>> it.... > >>> > >>> As for inexpensive cards - OpenVox. Their E1 cards seem to work OK, but > >>> if > >>> using a LAN extender, then they're not neeed at all... > >>> > >>> Gordon > >>> > >>> _______________________________________________ > >>> -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > >>> > >>> AstriCon 2008 - September 22 - 25 Phoenix, Arizona > >>> Register Now: http://www.astricon.net > >>> > >>> asterisk-users mailing list > >>> To UNSUBSCRIBE or update options visit: > >>> http://lists.digium.com/mailman/listinfo/asterisk-users > >>> > >>> > > _______________________________________________ > > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > > > > AstriCon 2008 - September 22 - 25 Phoenix, Arizona > > Register Now: http://www.astricon.net > > > > asterisk-users mailing list > > To UNSUBSCRIBE or update options visit: > > http://lists.digium.com/mailman/listinfo/asterisk-users > > >
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