T1

[icallmedan]

Why is T1 so expensive like $100+ for a service that is not any better than my cable that I pay $45 a month?

[ktkendall]

A T1 is way more than $100 a month, they have come down cause I remember when they were 2000 a month, but there was a recent thread where someone had similar question as you and he said he has priced them around 600 a month now.
The reason they are more pricey is cause it is a true full duplex dedicated circut that runs 1.54Mb both directions simultaneously, and you do not share that bandwith with anyone and your paying for the reliability and service and support you get from the telco with a full T1. They really only make good sense for businesses that require those features for speed, reliability and security...Many customers split their T1's also and may break out a few channels for data and use the rest for voice and they are well proven to be reliable and stable....

[icallmedan]

Ahhhhh....I see. I didn't realize that they had the same Upload/Download speed. Thanks.

[ktkendall]

Originally posted by icallmedan
Ahhhhh....I see. I didn't realize that they had the same Upload/Download speed. Thanks.

It's not only that but it's full duplex which means transmit and receive simultaneously and as I said full dedicated line from your building to the telco or as in many cases businesses with multiple sites link their voice and data networks via point to point t1's.. I don't think your common variety cable or dsl broadband is full duplex, even if the speeds are greater I think broadband is half duplex....

[icallmedan]

Wait so with full duplex I could upload a 50Mb of info, anddownload 50Mb, and they would both be done at the same time if started at the same time, where as with half duplex, it has to recieve, then send, then recieve, then send?

[ktkendall]

Correct....Even though with broadband your ethernet connection to your router is full duplex, I am pretty sure from the cable or dsl modem to the equipment on the other end is half duplex. Cable broadband may be a sort of full duplex but I doubt DSL can be, so yes half duplex means two way communications but only one direction at a time and full duplex is fully two direction simultaneous transmission of data or voice. Simplex is one way only...

[icallmedan]

Alright thanks for the info.

[gunrunnerjohn]

Originally posted by ktkendall
It's not only that but it's full duplex which means transmit and receive simultaneously and as I said full dedicated line from your building to the telco or as in many cases businesses with multiple sites link their voice and data networks via point to point t1's.. I don't think your common variety cable or dsl broadband is full duplex, even if the speeds are greater I think broadband is half duplex....
Actually, cable and DSL are both full-duplex, though the upstream speed doesn't quite match T1 speeds. :) For the typical home user, T1 would offer nothing, since Comcast accounts now offers 3mbit downlink speeds, and most traffic is downlink traffic. $43/mo beats $600++ by a bunch! :D

[ktkendall]

Now that U mention it and I think about it it does make sense that cable or dsl broadband could be full duplex since it is rather obvious that they are channelized and use seperate channels for download and upload, it makes sense that they can be using both at the same time, but I'm sure it can not be as stable or reliable as a T1 since a T is dedicated and uses a seperate pair of wires for transmit and receive...

[mairving]

Generally the support is better also and there are less hiccups with T1. My cable connection at home quit working last Friday. It turned out to be the cable coming into my house. They didn't get out to repair it til Thursday. If my T1 line at work is down for longer than 30 minutes, it is a major problem. The main thing that you get with T1 is support, faster uploads and the ability to support many more simultaneous users. For the home, no way you need a T1 but for work with over 30 users, it is the way to go.

[MulderMan]

can you get T1 in england???

[ktkendall]

Originally posted by MulderMan
can you get T1 in england???

Yes they are available over there. From what I have learned in a course I took about telco history, the BELL telco's started implementing T1 digital technology back in the 60's and it proved so reliable and successful that up untill fiber optic technology came of age, all of AT&T long lines transmissions went digital via T1, and T3 technology. That is why if your abit older you remember when U were a kid and long distance telephone calls were horrible, cause they were still being transmitted in analog format all the way. And now with fiber optic, I find a telephone call accross the country often sounds better than one accross town. But anyways enough for the history lesson for today, also from what I know that T1's in Europe run at 2.048Mbbs, cause if it is for voice you can get 32 channels for 32 simultaneous conversations as opposed to the standard 24 here in the USA....

[mbossman2]

Originally posted by MulderMan
can you get T1 in england???

yup, but the data pipe in Europe is larger at Kendall has pointed out and they are referred to as E1's in Europe.

As to why a T1 over a broadband line? not many reasons for internet access, but the real biggie is reliability. Telco's offer what is called 5 - 9's of reliability (99.999% up time) and for a business that relies on the internet, that is critical.

for traditional WAN links, the T1 is still king. In a frame relay configuration, the "owner" of the frame has pretty much complete control over the information sent onto that network. this gives them the ability to prioritize certain traffic types higher than others (ie the traffic generated by the application that this the core of your business is more important that say, interoffice emails and you as the WAN admin can't make sure the application data is sent before an email).

[icallmedan]

Thanks for the help everyone.

[ktkendall]

Thank You: I knew they were called something else in Europe but couldn't remember. Now it rings a bell cause our newer DS1 or T1 cards for our PBX's can run either t1 or E1 just by setting a dip switch. We recently were getting them factory set for E1 and of course we would push the card in and try all sorts of things but could not get the circut to sync up till finally they realized a whole slew of the cards got released here in the usa market with dip switch set for E1..We used to have a totally seperate card for each so now we pay the price of progress...Hours of troubleshooting for a simple problem the first time..