1.5Mbps of pure '90s: Setting up a T-1 today - ISP Series Episode 3
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- Опубліковано 9 тра 2024
- We've got the need for speed like it's 1993. We explore the legendary T1 connection, and work on getting our very own for the ISP. The next step is getting our router online and starting up BGP to announce our presence to the Internet.
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#90s #internet #technology
00:00 - The need for speed
00:45 - Why T1?
06:00 - Getting a T1
08:34 - Ordering a T1... or trying to
10:33 - DIY T1
11:22 - Configuring the Adtran CSU/DSU
11:43 - Cisco 2501
13:24 - Configuring the Cisco 2501
14:49 - SPARCclassic update
15:19 - Border Gateway Protocol
17:08 - Configuring BGP
18:58 - Success!
19:13 - Coming up
Huge thanks to:
Soundgo for the smooth track from the "2 A.M Chill Session" compilation
Watch: • 2 A.M Chill Session 🌌 ...
Listen: open.spotify.com/intl-fr/albu...
...and Downtown Binary for the mega "Astral"
Watch: • Downtown Binary - Astr...
Listen: open.spotify.com/album/1uGa6r...
Above music provided by Lofi Girl.
References:
National Communications Museum (2020). CC-BY. • The Telephone - How It...
Birth of the ARPAnet (2019). www.cybertelecom.org/notes/int...
Braun, Hans-Werner (1995). hpwren.ucsd.edu/~hwb/NSFNET/NS...
vectorpocket. www.freepik.com/free-vector/3...
Gast, Matthew S (2001). T1: A Survival Guide. O'Reilly & Associates. - Наука та технологія
Good lord - I do not miss those T1 braggarts in chat during the 'early' days!
Speaking of that, I remember when the Cray Internet guy got REALLY steamed when US Worst stopped supporting D4 and forced us to change their line to ESF thus dropping from 1544 to 1536… Took it out on our hide rather than US Worsts… Those we’re the days…
In the early 2000's, my dad started his medical practice in a clinic with a T1. After using 20 kbps dialup, going to his office and browsing the web was a pretty unreal experience. He couldn't stand to use our dial-up at home.
I worked at a telco for a while. I once downloaded the Linux kernel sources over one of our dual 700Mbps upstream links. It was done so fast I thought it had been locally cached, and I was wondering who had been downloading kernel sources. Nope. Just screaming fast connectivity pretty much right off the backbone to our state.
I remember hearing anecdotal stories from friends at the time who knew someone with a 1Mbps download speed. I remember thinking to myself 'what, a whole *megabit* are you crazy, no way...' ...and I think it was like 5 years later when I had my own ADSL connection of about 3Mbps, which definitely 'democratized' speeds then.
@@MattExzyWe had a fractional at home for my dad’s small business. I wanna say it was ISDN at 128kbps? That was *awesome* at the time.
@@MattExzy Times have truly changed, I just use my cell phone subscription these days, I get 100mbit on a regular 4g+ connection. A little more latency than a wired line but nothing that bothers me. It has a data quota at 100gb a month before they throttle the speed to 3mbit. Since I don't stream any 4k or any other data heavy stuff it works fine for my needs. 3mbit isn't fast by modern standards but growing up with just a dual isdn line at 128kbit I manage quite nicely.
What happens next????
Man, I remember when I was a kid I dreamed of having a T1 line. And then I got a bit older and cox came out with 3mbps cable internet. I was blown away. Fastest internet on the street between all my friends, which means we abused the crap out of my pc downloading music on kazaa lol
This video is basically my CCNA training course circa 2001, but 100x better presented than Cisco's computer training ever did. Great stuff
I LOVE these videos on old networking. Please never stop making them
I agree. I could watch these forever. So many memories of my teenage years when I had the privilege of working with a lot of this equipment!
"Mom! Hang up, I'm on a BBS download the latest warez!!" haha Let's just say my mom heard that often from me back in the 80's while connecting the Commodore C64 BBS'es, and later running my own BBS. At first using our family phone line, then later on got two dedicated lines for no more interruptions. Ah the good old days. :)
really? I have all kinds of wierd Networking crap starting from the mid 80's, maybe I should make vids about some it. :D
You can still get a T1 in my area through Verizon's local telco, at least in business locations.
FINALLY an explanation of T1 that actually makes sense! I don't know if I'm not looking in the right place, but I have never been able to find an explanation of stuff like this without an insane amount of jargon. I am also infuriated that no one else has made videos on vintage networking topics and equipment like this before, including something like the SPARCclassic. Keep making more amazing videos like this!
I loved using a T1 line in college, would always download lots of stuff in the computer lab and burn it in a CD-R to take home which still used dial up. This was back when Napster was popular.
omg, I got into it, like, the month Napster got shut down. I used Kazaa. I used to download mp3s at school and split them using the copy command to multiple floppies, and then merge them with copy again when I got home. I tried looking up the flags for copy to do this again recently and I cant find them, lol. They might be gone
My dorm had a T1 back then. Downloaded so much music from Napster. I remember a few guys having hustles selling burned cds for $5 since music was so easy to get.
@@kilo-watt My college had a single T1 for students and faculty in the early 2000s. We had so much file sharing going on that they had to block it (many ways around that however). It would saturate the network and the faculty would complain about not being able to do anything on the internet. Eventually they created a 2nd faculty only network that had their own T1. We hated when the put all the faculty on their own network because we couldn't send random messages to their printers anymore. Fun times!
I worked at a local dial-up ISP in the late 90s. When I first started they had a pair of T1s, but later replaced them with a >1gbps optical connection when the closet full of haphazardly-stacked modems got swapped out for banks of 56k modems built on special cards connected through a common backplane. Having access to a low-latency 10mbps connection (limited by the computer's network card) was truly incredible.
Honestly, hats off to your ISP for letting you demonstrate a real T1 line and BGP. This is an amazing series!
I’m still a bit confused about exactly how they accomplished that, would appreciate a short following follow up, I’m sure it’d be very interesting.
Sadly enough we still have several remote branches using T1s.
We used to have a T1 until AT&T sunset it in our area and we finally had to upgrade.
@@meJaso ATT and Verizon are desperately trying to get us to drop our T1s. We've gotten rid of the vast majority of them and are now FCA, which comes with its own host of problems.
It’s just a LAN though. The ISP didn’t have anything to do with this project.
I feel fortunate, when I was a kid, my dad was in upper management at a major ISP. He worked remotely, and through his job, we had a T1 directly to our house.
Unlikely
It wasn’t common, but definitely a thing. One of my parents was a VP in the back office of an investment bank. They were early experimenters with “telecommuting” and “remote operations,” and so we had a dedicated T1 line to the house that was paid for by the firm. 2-3 years later, optimum cable internet became available, which itself wasn’t super common in 2000-2001.
@@andrewdubose9968 IIRC at the time we had our T1, my dad was a VP as well, though I can't remember if he moved up into the C-suite before or after we moved and he started going into the office again.
A lot of this was my life at Qwest at one time- finding spare pairs to provision a T1 (or anything lower like a 56K or ISDN etc), calculating the losses and if it would require repeaters and how much the job would cost, then working with the crews to solve roadblocks ("you can't put a pedestal there" "turns out the pair is too noisy"). Also, It's astounding how expensive an OC-12 or 24 cost at the time, yet I now have an equivalent fiber line for less than $100/mo
I learned more about CLEC, ILEC, "last mile," and the magic phrase "necessary and adequate," than I ever wanted to know when I became involved in a dispute between Qwest and our ILEC while trying to get a T1 installed between our MI and it-doesn't-matter-what-the-other-state-was - MI was the problem. I can't imagine you guys having to deal with that all day every day - hats off.
Glad I spent a bit of time with US West, but just as glad to have moved on before it became Qwest. ¯\(°_o)/¯
I used to dream of having a T1 when I was younger. Thx for the videos.
It's mind-blowing how far we've come in terms of connectivity in the past 20-odd years. Just to think that a lot of people have watches on their wrists that have faster connections to the Internet than entire corporations had back then. When I was working in the ISP biz in the '90s-'00s, we eventually got an E1 (European equivalent of a T1, but 2.048Mbps), and man, that was quick at the time - I used to stay late at the office to get all my downloading done 😄
It's similarly amazing that it's taken so long for the average consumer to be able to make the most of an 10/100 ethernet adapter for anything more than a local network.
Our T1 contract in 2006 was 300 a month.
Somewhere in the pit is my copy of O'Reilly's t carrier the definite guide
Woo, glad my gut feeling of $200-500 in its latter days was accurate!
As an operator of a startup ISP, this video was absolutely packed with information. Absolutely love it.
Despite dealing with fiber and Gigabit speeds, almost the same jargon are still in use today, and I finally, FINALLY, understand where it all came from omg
Ooo I spy me a Cyclades box there at the end! I used those back at my first ISP tech job in the 90s. So many great networking fundamentals learned back then. I truly love this series. Thank you dearly for putting this together.
I've been trying to forget all the T1, Frac, Frame Relay, etc circuits that I had to set up back in the 90s and early 00's. The setup was simple, but dealing with the different Telco tech's was often a nightmare (because they NEVER made mistakes, even after you showed them they did). Cisco 25xx routers were bulletproof, still are if you can tolerate the 10Mb speeds.
This is a killer series, thank you for taking the initiative to do this. You are doing God's work letting us young hacker's learn about good old days the grey beards talk about.
Thanks for watching! We spent a lot of time deciding how to show this, actually.
frame relay and fractional T1 might be interesting sidenotes. I worked at a large region ISP in the late 90s and while main upstream were multiple T3s, we had remote branch dial-in servers connected through frame relay. In the early 2000s my subsequent employer went from frame relay with channelized fractional T1 for voice lines to combined voice and data over T1 to VoIP over T1, and finally to cable.
I personally was responsible for configuring the xylogics microannex XL in college for dial-in access (replacing a cisco STS-10) which led to my job at the ISP primarily maintaining banks of telebit netblazers with racks of microcom(?) modems. there was some talk of replacing the modems with newer netblazers that could take in channelized T1s and handle 56k "modems" completely with DSP on each of the DS0s, but after I left the management decided to replace the netblazers with livingston portmasters which stupidly only supported 30 ports instead of the netblazer's 32, requiring redoing the wiring.
interesting times.
You should also need to talk of the BRA ( Basic Rate Access ) since it was also part of the ISDN suite with the T1/E1 and provided up to 144Kbits/s ( with tricks and the correct hardware + subscription ) when the norm was 56Kbauds...
Also, since T1 is American Specific, in Europe it's called E1 and it's a 2048Kbits/sec link ( 32*64K [with up to 30 usable for data] )
Edit :
Oh and in lots of place in Europe, we used V.36, or X.21/V.11... V.35 was usually seen as a PITA due to the two different pin sizes that could be on the connectors and the indecent size of said connectors ( V.36 and V.11 use Sub-D sized connectors [ 15 pins for V.11, 37 pins for V.36 ]
To the best of my knowledge, Asia settlers on E1 standard.
I was in SE Asia and we were putting in a Terminal server, connected to the Master Exchange at the Telco. We had a stumbling issue in that we couldn't get the E1 cards to go into the Exchange at a reasonable price.
Fun days.
I started with a company in 2014 with about 40 laptops all served by a single T1 connection... That was hell.
Wow and I thought running a business on a T1 in 2005-2006 was bad back then.....😬
Woah - I did almost exactly this work back in 2003 with a small moving and storage company as the IT guy. Excellent video to know is what is coming 80% of the time. The other 20% was an amazing "OH! That's what that was!". Excellent video and looking forward to more in the series. I love your take on preservation and restoration.
The k12 school I worked at had a T1 for many years and we eventually started to saturate that T1 link. At that point we ended up getting another T1 and bonded it with the existing T1 which helped for a while. At the time we really didn't have much choice for high speed internet. We ran the Cisco 2501 and had a Cisco 6509 Core and ran Cisco edge switches.
I still remember when we updated the fiber between the four campuses from a single shared 100Mb link to four dedicated 1 Gig links (I think that was 2007).
I used to set up the CSU/DSUs and routers at the ends of T1s. I'm glad we no longer have v.35 connectors.
That's really cool your ISP let you do that. Honestly, I wish more businesses were open to such things. I get work is busy and you don't have resources to answer every single question or help every single person. Still cool to help out with something like this that can help people better understand the technology.
This reminded me of my setting up of ISDN in 1997, which I used until 2003. I had two 64 Kbps B channels, allowing 128 Kbps. I had this connected to a "Smoothwall" router and a network switch to both my computer and my brother's computer. ISDN was my only better option than dial-up; DSL was not available in my area.
I remember kids in school (early high school) talking about getting these ... it was crazy and the speeds were crazy compared to what we were used to. I remember kids saying they wanted t1 t2 and t3 lines for their houses but were crazy expensive.... getting geeked out over a t1 at school brings back memories... those were the days...
When I was in the Navy (late 2010s), I actually was the one who finally decommissioned an AdTran we used for our old VTC setup. I always got a kick out of dialing up VTCs using it.
Already one of the best retrocomputing channels.
This brings back memories.
When an ISP in my country started offering T1 internet services, i went to them and asked if i could have it for my home. Truth being told, i didn't knew what T1 was at that time...in the mid 90s, to me it was just an internet link.
The engineers with whom i talked, asked how many apartments in my building will be connected with T1. I was like why, i just want it for myself. They smiled and told me it would have cost $1000/month to bring T1 in your building.
In the end, i got a dial up with that sweet sweet tone to listen to. And i used it only to chat via IRC...nothing else.
In 1996 I was a Software Dev Manager for Dialogic Corp.,, the then leader in voicemail and voice response systems for business. I needed surgery and had to work at home for a couple of months so they installed “fractional T1”, two bonded 56K lines. That gave me 112Kb/s of 24/7 Internet connectivity. Compared to the 56K modems in use at the time that usually connected at 33.6K, it was heaven on earth. Thanks for the memories!
Ah the T1... In the late 90's I had 2 friends that were the only techs for a local ISP. They would invite me up on weekend nights to join them gaming on the ISPs connection, as long as I brought the beer. Was so sweet playing Quake from there when your opponents were all on 33.6 modems..... actually it was more of a turkey shoot. >=)
I remember working a for a local ISP in '97. We had a T1 line for 25 modems in our community. I loved walking into the office and having direct access to that connection. It was a warez's wetdream in those days.
Wow, that brings back memories. I was an ISP network admin back in '96 and managed all that equipment - the AdTran, Cisco 2500, plus a Radius server for a bank of dialups. We had a fractional T1 at first. but it still beat out any modem connection.
Speaking of the growth of the internet, I remember buying a book back in the early 90s that was a Yellow Pages of the Internet. For the Gen Z'ers, that was a physical book with a listing for every known business website at the time.
Yahoo was also originally just a digital web-formatted index of curated sites broken down into categories. It wasn't even a search engine per-se.
And then I'm sitting here, watching this video on this cutting edge 1.5Mbps... on my brand new gigabit install :D
I was the telecom tech for a large hospital group and we had T1 before the telco's offered it. It was implemented using microwave between two hospitals on opposite sides of town. It was used for data and telecom. Eventually the telco was able to offer T1 so we used them until other companies provided better/cheaper service via fiber. I think we had 72 T1's by the time I retired. Many of them were configured as ISDN with 23 bearer and 1 data channel per span for voice. I still have a couple of ADIT channel banks that I use for my antique telephone connections with an Asterisk box.
Great work, retro networking has been a bit underrated. A couple years back I set up an E1 in my lab using two Cisco 2500 series and network termination equipment, mostly out of curiosity for 90s networking and because the kit was available cheaply on eBay. I did the same with ISDN BRI, and have a couple of ISDN BRI and PRI test phones too. Fun stuff to play with and as you say, absolute game-changers back in the day.
That brings back memories of working at a school district. Each building had a T1 line - the speed was amazing back in the day. Especially when school was closed - we (the IT team) would come in and surf using the T1's since nobody was on them.
That "transceiver card" is called a "Smartjack". In the olden days, it was the interface for the telco to test the line, and tell if the CPE was even connected. For over 20 years, that card has actually be a converter - 2-wire HDSL on the telco side, and 4-wire T1 on the cpe side. That's what you appear to be hanging on the wall. (note the 2 fuses on the right [net] and 4 on the left [user]) There's a complete little computer in there, accessible from that DB9 serial port.
Oh so it's basically running a T1 emulation layer over DSL, not real T1? The channel guy will be so disappointed!
@@thewhitefalcon8539 It's a T1 at your equipment, why do you care what it is beyond that? Even when carriers delivered a "True T1", it was rarely a T1 end-to-end; they were almost always multiplex into larger circuits (T3, OC-x) When the world became ethernet, T1's became an emulated service. (see also: Circuit Emulation Service)
Wow that was well done. Insane to have a proper BGP route published by a 2500 series. It could barely fit a fraction of all current routes in its memory.
thats why he contracted the upstream ISP to send him the default route rather than the full internet routing table. Its fine for his setup as he's not multihoming, but for a real ISP they would want to multihome, and therefore want the full internet routing table.
I actually have a few customers of mine that requested the full routing table, which was wild to see cause for enterprise businesses you don't need to have the full table unless you want to become a transit network on the internet.
I was wondering why they wasnt using RIPv2 for this, but still interesting to see BGP in use.
@@alzeNL because RIPv2 is an IGP and not intended to use between autonomous systems. BGP is basically the last remaining EGP for use in advertising routes between AS.
@@bassman87You can multihome just fine while only receiving a default from both providers :) . Like you said a bit later, it is actually uncommon in the enterprise to get more than a default, even when multihoming.
@@BogdanSass you're correct from an enterprise point of view, Enterprises don't typically want to become a transit network, where internet traffic from one peer passes through your network to get to another peer. This is where multihoming with default routes works great, cause you can advertise you're public block to both peers without becoming a transit network. effectively you are a stub network at that point.
But from an ISP perspective in many cases you want to be a transit network. so having the full internet routing table allows you to perform best path calculations for destinations between peers.
Watching this was a blast as it brought up so many wonderful mamories of my time at Florida Internet back in 1996. We had 4 T1 lines each from different providers, Adtran csu/dsu's, tons of punch down blocks for dial-in lines, racks of Portmaster 2's along with external modems with the cases removed and a custom bracket to make it rack mountable, Cisco 2501, and our servers (BSD/OS (using Pentium Pro cpus) and Solaris 2.5.1). I even certified in that version of Solaris at the time. Every piece of this was just loads of happy memories and I can't wait to see the next part to add dial-up capabilities.
Five years later a kid barely out of highschool set up a 1000-device network on similar equipment, using similar commands, and sold the 4Mbps frame relay connection to data hungry Australian start-ups. What a walk through memory lane!
Good times!! I worked for the PacBell (phone co) from 91 to 23. Learned all this stuff, working on a comm tech. The technology ride was awesome! Watched DS0, to .x25 to channelized T1, to full T1, to T3, and even Muxing T1 (called the T2 (rare)). I got front row seats to watch fiber come into our buildings.. grow and take over like no one EVER expected! Then watched, 1Gb, 10Gb, 100Gb, WDWM, and right before I left, 400Gb lines to customers... I really would love to come back into a At&t building 20 years from now and marvel!!
What a fun series!
I was an escalation engineer at Lucent. I spent countless hours walking people through configuring those Adtrans. Ah, the good ‘ol days.
This was a fun time to be alive.
This brings back memories of the days when everyone and their dog would set up a dialup ISP in their house.
Can't wait to see more adventures of the ISP. Haha. Doing gods work here, bringing retro tech to people like me, who was born way after this.
Well, i dont actually think it's that retro haha .. In the end it doesn't differ much in logical terms to what we have now.. :) But I love so much the "retro style"
@@eugeniomartinboni8860 definitely. It's just basic networking.... But with different mediums.
In the Netherlands we call it ISDN, it is dail up... and paid by minute. You can combine multiple lines
One of the benefits of working for some of those Tier 1 ISPs in the 90s (such as Digex) was a subsidized T1 to your house. I miss that. :)
The default CPE was a Cisco 1005 but I later used a 2514 to isolate my two routable networks.
I wish there was something stronger than a “thumbs up” because this video was stellar. A trip down memory lane, this was. By the time my old company retired T1s, we had four coming in for a 6mb connection which got split out by ISP equipment (AdTran not Cisco this time) to a PRI for voice, a half dozen or so analog lines, and of course ethernet. It went through our firewall, then hit the core router where we had at least five point to point T1 circuits, a couple were bonded and went to a single location. It was a great solution because we were able to push all the Internet and voice services out from a central location and save a ton of money. Indeed, like you mentioned, we in IT felt like gangsters at the HQ because we had faster Internet than everywhere else.
This is awesome! Thanks for the video!
A fond memory I have of the early 90s BBS days was upgrading from my 14.4 to a Supra 28.8 pre- standardization. Supra told me I was going to be the "first" in Texas to have one (never believed it, but they did a good job making me feel special). I still get thrilled when I see those old aluminum Supra cases, though. What a fun time to in the game, connecting people via fido and wwivnet and every kind of sharing that brought me a couple of life-long friends.
Great video! One note on the smartjack you have: it converts HDSL2 on the telco side into a T1 signal on the customer side. HDSL2 is a method of transmitting a T1 over a single copper pair rather than two. It also allows for a longer distance between repeaters, 9,000 feet vs 6,000 feet with a regular T1. The HDSL2 standard was published in 2000. The previous generation of HDSL came out in 1994 and had similar advantages, but used two pairs. HDSL1 allows for a distance of 12,000 feet between repeaters.
In the late 90's I knew someone who had a business server with three T1 lines, and I said where I worked we had a T3 line. He said it was the same speed, and I said 'Not even close."
Absolutely top quality video. Great job! This video must have taken a lot of work. Fun to watch, and I relearned a bunch of stuff. Can't wait for the next episode!
Did sooooo much work on this sort of gear back then. Also taught the various protocols and troubleshooting them. Have Sage (T1 test set), will travel! Lol.
You knew you were having fun when you got a grumpy call from MCI to stop crashing their DMS central office switch by whistling into a giant conference bridge (we were the manufacturer), which was setting the second most significant bit across 240 DS0s simultaneously - the “robbed bit” way of saying “yellow alarm” to the equipment at the other end of a T1… and causing the entire T1 circuit to flush down all phone calls on all 24 DS0s and reset the T1 circuit.
One of the major benefits of ESF was this couldn’t happen - the alarm bits were moved out of the DS0s.
Good times.
Physical / hard loopbacks were stellar for end to end circuit tests. “Fake” software loopbacks couldn’t always be trusted. Numerous early CSU/DSU boxes had horrendous firmware bugs. And carriers had lord only knows how many devices along a path misconfigured to respond to in-band loop up commands, so you never really knew where you were testing to.
If you really want a mind bender… think about this. A T1 circuit was synchronous. As copper coax and later fiber came on the scene, multiplexing a DS1 into a DS3 was common. And a DS3 was asynchronous - but still needed a master clock source. Wrapping your brain around that, is pure entertainment.
I “remotely troubleshot” a T1 issue where the circuit wouldn’t come up and some very grumpy military brass were quite antsy. Something about a rather well known missile test range.
After looking over a diagram that was faxed to us - we were the DS3 and DS1 equipment manufacturer - that looked like it was drawn in sharpie… my brain said “check that there’s one click source set somewhere on this stupid path. Asked em… heard someone in the background yell “it’s up!”, got thanked, and apparently some nifty middle test wasn’t cancelled that day. Haha.
Fun to watch you guys building all this old old stuff on a tiny scale. I dealt with hundreds of DS3s and thousands of DS1s.
Cheers.
👍
Love this, I've worked in VoIP for 15 years and we still use this technology to this day for voice circuits (PRI).
Wanted to thank you for these videos, just started studying networking and it has helped so much going back to basics and understanding how it worked back in the day.
That's pretty dope. Thanks for sharing this.
Fascinating! An actual T1 demonstrated end-to-end… always wanted to see that. Looking forward to the next one!
Many memories ....
I remember that I setup an ISP using cyclades PR4000. Was THE BEST and FASTEST ISP that time .. good times. ❤❤
I too dreamt of a T1 connection (or in Europe an E1 @ 2Mbps) in the 90s. I am now waiting for my 1Gps fibre which may come before the end of the year.
This is so nostalgic, I learned about and configured all this in 2006, going through my CCNA course in high school.
Can't wait for the modem part! This is so lovely, thanks for the great work!
What an amazing series. Really happy I stumbled across your channel, such amazing content. Subbed!
Just wanted to express how impressed I am with this video and the lengths you went to for proper testing. You stated that you wanted this series to be a sort of archive for internet history and youre doing a really good job.
Really well edited and engaging video on a subject that is far too often documented in a mundane boring way.
I wasnt alive for this era of routing, but retro computing and networking has always been an interesting subject for me. I learned bits and pieces of this when I was in college for my degree in networking and this was much more informative than any lecture i had.
Wishing you nothing but success on your channel.
I still work with T1's to this day. They are still being used for Public Safety radio communications links between tower sites in many counties.
Love this series!
I wish i knew all this stuff back then! Thanks for the trip down memory lane
I was still using 2 bonded T1s within the last 10 years. Finally got the 10 or so out of the garage to electronics recycling.
Awesome to see this project progress, thanks for sharing 😁
I love how you're getting more and more interviews with these guys.
I also really enjoy your visual design, the chroma-keyed backgrounds on hover-items so your background shows through, including doing it on video like your terminal emulator, gives it all such a cohesive aesthetic. But it's not overly gaudy or flashy like many other channels' attempts at similar aesthetics (various sci-fi lore channels come to mind).
By the way, were you really going to pay whatever AT&T were going to ask, if they were even still offering T1s nowadays? I get that with cable and fibre they might've been lower than $2000 a month, but I imagine it still would've been $200-500 at least. Hmm, I wonder if anyone's compiled a list of T1 pricing over the years until they finally stopped offering it.
I've always wanted to build my own retro ISP as I was too young & inexperienced to work for one in the 90's, however I was facinated by how it all worked. So this series is very satisfying to watch & bringing back a lot of memories. Keep up the great work!
Many thanks for your sharing
The medical alert service killed me
Having lived this era, I don't want to return :). Great videos!
very informative content, thank you for your work.
As a high schooler from 2001-2005 I fantasized about T1 and T3 lines. T3 was just otherworldly at 45mbps and here I am in 2023 with 1gbps fiber to the home and I don't even care if it underperforms by 50% because it's plenty.
Omg this series is so good. I'm feeling so nostalgic ❤
Dude, you are amazing! subbed.
This brings me back to working on this stuff for a startup back in the 1990s straight out of school. Same stuff in this video, from the Adtran, the Cisco router and even the transceiver. The first machine we hooked this all into was a Sun Sparc 2.
This siries is what i've been wanting for years! Keep up the awesome stuff!
Man these type of videos make me feel old. I've setup T1s and T3s. I guess that is why I've been doing this for 30 years.
Thanks for your channel content, I look forward to the next part in this series. Kind regards from New Zealand.
Great job dude! Looking forward to more
Oh man, that Portmaster 2e quick shot at the end of this video brings back so many many memories! :)
T1s could also be used to bridge offices. Before high speed internet, it was common for remote offices to have T1s to the HQ/Datacenter (in the scale of a city in this case. Across the country the internet and multiple telcos was still involved). These T1s wouldn't have internet access directly, but it was routed and delivered from the HQ/Datacenter site. We had a remote warehouse where I worked back in the day that was connected to our network via a private T1 connection. You can also bond multiple T1s together to increase bandwidth! I use to work with them all the time, and honestly they were a pain subject to the weather and the environment. This could be hell to troubleshoot and the telco usually wrote you off if the smartjack's lights said all was well.
You can still get this service and it's still very popular, just not over T1.
@@thewhitefalcon8539 Yeah its almost always dark fiber now.
This was impressive 😊 thanks
I'm a networking student at the moment. Great to see Cisco IOS haha.
I was also so surprised to be able to ping the 205 IP. It's truly on the internet!
Wow! This is my home's current internet speed! Can't believe my family gets such new cutting edge tech as this!
Well done. 30 years ago I was selling 56K DDS DSUs and T1 DSUs from AT&T Paradyne, Adtran, Codex, UDS, Racal, IBM, Kentrox and a few others. I remember these days well. Got onto the internet at 1200 bps via dial up modem in 1994. There were no web pages in that year, email and FTP were king.
I recall at one of my early jobs around 2001 we had a T1 hooked up to a 2600 just as this video for our office internet, and our ISP offered us support for the compression AIM over our T-1 which felt like going from Full Impulse to Warp 9! We'd usually see speeds anywhere between 3-4mbps depending (I think the theoretical max, assuming maximum compression, was ~8mbps 🔥)
Love this video! I worked for Cisco in 1995 and getting businesses online meant either ISDN(64k or 128k), fractional T1/T1, and frame relay. I helped many customers with either buying or setting up their Cisco 2501's, and worked with all of the technologies including that adtran unit, you mention in the video. I haven't heard these terms in years but would have to educate customers daily on proper setup, correct configurations, troubleshooting, etc. Loved this stuff!!
OMG I installed literally hundreds if not thousands of T1's from the 80's into the early 2000's I really miss working on this technology!
Just stumbled about this cool vid! I am in the ISP business here in Germany and we used E1 Lines in framed (30 channels at 64000kbit) oder unframed (2048kbit/s) configuration. I still have 2 Cisco 2501 with Rj45 and BNC AUI Transceivers. Additionally 3 Cisco 2621XM and WIC-2T Cards. Use the stuff to show the beginning of the modern Internet to our apprentices. None of them were born when the 2500 Series went out of service. Now I feel old again.
The coolest thing I've seen you do
Brings back good memories of when we first got our T1 line. Lightning speed. Great series.
Here in Australia we used E1 instead, which was 2Mbps, and usually provided an ISDN PRI service of 30 x B channels of 64k each (and one D), which was a massive game changer for dialups. Two incoming cables, just cat5 from memory, connected to a magic Cisco AS5200 or 5300 and you had 60 "modems" for people to connect to, compared to the Christmas tree of rack mount modems before with a separate twisted pair connected to each individual modem. Networking was fun then, with Frame Relays, ATM, and more. Different network stacks (IPX/SPX, Banyan, and IP). Now most things present as ethernet and IP.
Man, warezing on FTP was the most fun I've ever had in my life. Getting ~3kbps on average was a painful thing, but it made cracking that Corel Draw 8 ISO that took a week to down so much sweeter.