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Osmocom icE1usb: Open hardware USB E1/T1 adapter

projects.osmocom.org

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Re: Osmocom icE1usb: Open hardware USB E1/T1 adapter

#5

Post by sigstoat »

alex_young wrote: post #2

Can one still order a T1 line? 1.54mbps isn’t so fast these days in most places...

still had one as of a year and a half ago, for bringing in phone lines to a business. they'd converted it a year previous to be SIP over an IP link, though. meh. at that point it was only a tiny smidge better than twilio over business comcast, and was waaaay more of a hassle.

Re: Osmocom icE1usb: Open hardware USB E1/T1 adapter

#6

Post by FreshFries »

Ah Harald still at large! I met him in Austria where he gave a training on OsmocomBB (2010? Found the link [0]) and blew me away with his acquired knowledge of GSM. I worked for a large European mobile provider and it was very uncommon to meet people outside of that bubble to be interested, let alone knowledgeable about the domain.

Mind you, at that time there where hardly or no easy accessible & readable write-ups on the subject. Piles and piles of badly formatted and cryptic worded PDF's had to be obtained, read and understood. He did it.

Remember, this was in the same year Karsten Nohl gave his BlackHat presentation on cracking A5/1. Exciting times :)

[0] https://deepsec.net/docs/Slides/2010/DeepSec_2010_OsmocomBB.... [1] https://srlabs.de/wp-content/uploads/2010/07/100729.Breaking...

Re: Osmocom icE1usb: Open hardware USB E1/T1 adapter

#7

Post by stas2k »

FreshFries wrote: post #6

Ah Harald still at large! I met him in Austria where he gave a training on OsmocomBB (2010? Found the link [0]) and blew me away with his acquired knowledge of GSM. I worked for a large European mobile provider and it was very uncommon to meet people outside of that bubble to be interested, let alone knowledgeable about the domain. Mind you, at that time there where hardly or no easy accessible & readable write-ups o…

I saw them do A5/1 live cracking on stage in Netherlands. It is amazing what you can do with sheer determination. Learned a lot from their talks on GSM.

USB E1 is holy grail when it comes to E1 interfaces. Before that meant a PCI card, which excluded all laptops and SBCs. And it usually required some pretty specific kernels and modules to be installed.

Re: Osmocom icE1usb: Open hardware USB E1/T1 adapter

#8

Post by mschuster91 »

stas2k wrote: post #7
FreshFries wrote: post #6

Ah Harald still at large! I met him in Austria where he gave a training on OsmocomBB (2010? Found the link [0]) and blew me away with his acquired knowledge of GSM. I worked for a large European mobile provider and it was very uncommon to meet people outside of that bubble to be interested, let alone knowledgeable about the domain. Mind you, at that time there where hardly or no easy accessible & readable write-ups o…

I saw them do A5/1 live cracking on stage in Netherlands. It is amazing what you can do with sheer determination. Learned a lot from their talks on GSM. USB E1 is holy grail when it comes to E1 interfaces. Before that meant a PCI card, which excluded all laptops and SBCs. And it usually required some pretty specific kernels and modules to be installed.

> which excluded all laptops

There exist Thunderbolt 2 and 3 PCI breakout boxes. Usually they're used for eGPU setups, but they work with pretty much anything.

Re: Osmocom icE1usb: Open hardware USB E1/T1 adapter

#9

Post by the_only_law »

Wow, I was looking for a T1/E1 adapter recently for a side project and couldn’t hardly find anything. Sangoma seems to own most of the cards nowadays, and they’re awfully expensive and just awful in general. The only remotely affordable line for me was the Digium line and the documentation for their DAHDI driver outside the brief read me is basically telling you to contact support. And unless you’re using them for an Asterisk setup (I’m not) community support seems to be useless. I ended up paying around $500 for a single port Digium card which I’m not even sure will be able to do what I want now. Other than the expensive Sangoma lines, I was able to find what seemed like a perfect option from GL, except I was quoted $10k, which wasn’t happening. Only other manufacturer I could remotely find was a company making PRI cards that wanted you to fax or email your credit card info. Nice to know there’s another option now.
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