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?
Eric On Thu, Oct 2, 2008 at 11:34 PM, Gordon Henderson < [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