Dissecting A T1 Line | Hackaday

ByJosephine J. Romero

Jun 2, 2022 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,
Dissecting A T1 Line | Hackaday

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When it will come to web connections, below in 2022 so several of us have it uncomplicated. Our ISP offers us with a fibre, cable, or DSL line, and we just plug in and go. It’s turn out to be ubiquitous to the extent that a lot of prospects no lengthier use the analogue cellular phone line that is so usually element of the offer. But right before there was easy access to DSL there were being leased strains, and it’s just one of these that [Old VCR] is dissecting. The line in issue is a T1 link good for 1.536 Mbit/s and put in at wonderful price in the days in advance of his cable supplier made available responsible support, but around a decade afterwards is now surplus to necessities. The ISP didn’t ask for their router back again, so what else to do but give it the hacking cure?

In a prolonged blog submit, he can take us by means of the facts of what a T1 line is and how it’s installed employing two copper traces, just before diving into the router itself. It’s an obsolete Samsung system, and as he examined the chips he located not the MIPS or ARM processors we’d be expecting from domestic equipment of the interval, but a PowerPC SoC from Freescale. Connecting to the serial port reveals it as functioning SNOS, or Samsung Community Running Process from an SD card, and some experimentation finds a default password reset method by the bootloader commands. The rest of the piece is dedicated to checking out this OS.

There was a time just before the advent of the Raspberry Pi and very similar affordable Linux-capable boards, that hacking a router was the way to get a low-cost embedded Linux system, but now it’s much a lot more accomplished to liberate a router from the clutches of manufacturer and telco. However, it’s really much nonetheless component of the typical fare listed here at Hackaday.

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