Some other differences I think are associated with a T1 line.
I believe that T1 lines come standard with a static IP number. As you state below their up speed is as much as their down speed. (Most home DSL's and Cable setups have a high down speed, but a much slower up speed)
Also I believe there is no limit placed on a T1 line where limits are regularly placed and enforced on home DSL/Cable lines (ask the AP who just caught Comcast limiting bandwidth on customers)
I also think but am not sure how to state it, but the width of the T1 line is much greater than any home DSL/Cable hook up. (What I am trying to say is a T1 line can handle a lot more volume than a home DSL/Cable connection)
Stewart At 10:54 PM 10/24/2007, you wrote: Just a brief clarification. "DSL" is a term that's used like "Kleenex."
A T1, or what is more accurately referred to as a DS1, IS a Digital Subscriber Line. At 1.544 megabits of bandwidth. If it's configured with ISDN signalling it's a PRI, Primary Rate Interface. But it's still generically a "DSL" "line". The "DSL" that has become common parlance is a digital signalling protocol that rides a T0 line (your basic home phone line or in some cases a naked loop). This can be asynchronus or synchronus depending on the service offering. ADSL or SDSL. To muddy the waters, ISDN BRI (Basic Rate Interface) is also a "DSL" configuration. In this case, as with DS1 configurations, there is no analog functionality. But as has been mentioned, there is a distance limitation. I can actually push ISDN BRI past the 18K feet limit, but only with a powered repeater or an Adtran package. A repeater needs a power source mid-span, and an Adtran package needs a powered card at the CO and the destination. Neither of these is cost effective. And ISDN BRI is only 128 kbps. A DS1 or a PRI configured DS1 has powered customer equipment (CSU/DSU) at the terminating end. Reach is improved. If I have fiber available I essentially have no line losses but I still need (sometimes expensive) equipment, with power, at the terminating end. I can't make consumer "DSL" work reliably past 18K feet from the CO. Well, I can out to maybe 20K with a clean loop and a lot of luck. But it won't work well enough to sell. "DSL", as it is commonly known, is a transitional product. FiOS is where it's at. The basic strategy is to deliver very high bandwidth over a next generation network at prices that make cable look even more expensive than it already is. But talk is cheap, whiskey costs money. This is an immense capital investment but it is paying off. Nothing here reflects anything but my personal opinion and all of it is public domain. ************************************************************************ * ==> QUICK LIST-COMMAND REFERENCE - Put the following commands in <== * ==> the body of an email & send 'em to: [EMAIL PROTECTED] <== * Join the list: SUBSCRIBE COMPUTERGUYS-L Your Name * Too much mail? Try Daily Digests command: SET COMPUTERGUYS-L DIGEST * Tired of the List? Unsubscribe command: SIGNOFF COMPUTERGUYS-L * New address? From OLD address send: CHANGE COMPUTERGUYS-L YourNewAddress * Need more help? Send mail to: [EMAIL PROTECTED] ************************************************************************ * List archive at www.mail-archive.com/[email protected]/ * RSS at www.mail-archive.com/[email protected]/maillist.xml * Messages bearing the header "X-No-Archive: yes" will not be archived ************************************************************************
Rev. Stewart A. Marshall mailto:[EMAIL PROTECTED] Prince of Peace Ozark, AL SL 82 ************************************************************************ * ==> QUICK LIST-COMMAND REFERENCE - Put the following commands in <== * ==> the body of an email & send 'em to: [EMAIL PROTECTED] <== * Join the list: SUBSCRIBE COMPUTERGUYS-L Your Name * Too much mail? Try Daily Digests command: SET COMPUTERGUYS-L DIGEST * Tired of the List? Unsubscribe command: SIGNOFF COMPUTERGUYS-L * New address? From OLD address send: CHANGE COMPUTERGUYS-L YourNewAddress * Need more help? Send mail to: [EMAIL PROTECTED] ************************************************************************ * List archive at www.mail-archive.com/[email protected]/ * RSS at www.mail-archive.com/[email protected]/maillist.xml * Messages bearing the header "X-No-Archive: yes" will not be archived ************************************************************************
