T1 cabling

If I'm wanting to use implement a substitute PBX for practice, can I connect one voice router to another voice router via their T1 ports, or do they connect solely to each other through their serial ports?

Find more posts tagged with

Free for TechExams community: Cybersecurity salary guide

Compare cert salaries and plan your next career move

Button

Comments

pitviper

Yes, you can connect a T1 back to back w/a T1 crossover cable and the proper clocking.

mrblackmamba343

Use a T1 crossover and set the clock source to internal

Computer idiot

Ok, this sux. I begged a T1 cable from work, which they grudgingly gave, in order to do some lab work, but I found out it's a T1 straight-through - not a crossover. I need the crossover to connect my two routers for voice work. I don't think I can get another cable from there, and I don't have the tools to make my own. Sure, I can go out and get the cabling supplies, but since I've not made my own, I have to assault the learning curve for that to get it done. Meanwhile, my lab work sits idle and I'm getting nothing done. I don't think there's a place in town where I can just go to buy the assembled cables (like worthless Best Buy - "Huh? A T1-what? What's that?") Otherwise, I'd just go out and buy one for now just so I could get something done.

So much for doing lab work this week.

kalebksp

All you need is some RJ45 connectors, some Cat5, and a RJ45 crimping tool. Making cables isn't as hard as you might think. Plus it's a good skill to have, and usually expected of those that work in IT.

pitviper

For an easier and cheaper route - Go to your local Radio Shack (assuming that you're in the US) and pick up some "tooless" RJ-45 jacks. From there just cut a section out of a regular patch cable and cross the wires between 2 jacks. Then just plug a standard patch cable in on each side.

fig3.gif

Cherper

Easy enough to do. Here is the basic pin out.

1 2 3 4 5 6 7 8
4 5 3 1 2 6 7 8

Just cross your white-orange/orange with your blue/white-blue.

Computer idiot

To connect two routers together, you can use a serial cable, I know. Just set one router to DCE and the other to DTE. You can also connect two routers together using a T1 cable. Now, if I'm using two voice routers, and I want to connect an analog phone to Router1 and a VoIP phone to Router2, and this is in my home lab environmnet, when should I choose one cable over the other? Can I use either?

mgeorge

Creating a T1 Crossover | www.lextrain.com

Crunchyhippo

mgeorge wrote: »

Creating a T1 Crossover | www.lextrain.com

Check Cisco's website. They have tons of stuff that might help you with this.