I should also have added that "DS" is derived from "digital signal" while "T" is derived from "T-Carrier."
s vermill wrote: > > Scott Roberts wrote: > > > > why do people refer to a DS3 as a DS3 and not a T3? is there > > something I'm > > missing? > > It's a bit esoteric. I'm working on something that will help > clarify. In short, a DS3 is a frame structure (28 T1s plus > 1.504 mbps overhead, all interleaved in a certain way, etc, > etc). A T3 is an actual interface (certain peak-to-peak > voltage, certain impedance, etc). It's rare that you would > ever get your hands on an actual DS3 because that is created > by, say, a T3 mux. T1s as input, DS3 frame created from those, > and T3 out for further transmission. In that example, there’s > never a discrete DS3 out in the open - it exists only inside > the mux and only briefly. To (hopefully) further clarify, you > won't find a SONET box with a DS3 interface. It'll have a T3 > interface. > > They're pretty much used interchangeably in industry though. > > > > > > scott > > > > ""Nate"" wrote in message > > news:[EMAIL PROTECTED] > > > We've run a bandwidth test on our DS3 with nothing connected > > to it but a > > > workstation (and obviously a router/pix). We went to > > testmyspeed.com as > > > well as dslreports.com. We both got very good bandwidth > > tests (upward > > 6m/s) > > > however in transferring a 200m file to/from a workstation > > behind the > > > connection, we got over 30 minutes while our existing T1 got > > 26 minutes. > > > Anyone mind explaining this phenomenon? Just a side note, > we > > have no > > > encryption between GRE tunnels. Thanks in advanced. > > > > > > -Nate > > > > > > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=65872&t=65790 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
