September 2008 Archives
Fri Sep 19 16:19:27 CEST 2008
Moving
Readers of my blog will want to update their URLs. As of right now, I've moved my blog to http://blog.fortytwo.ch/.
Fri Sep 19 10:55:13 CEST 2008
HAL, D-Bus, udev, DeviceKit, Gstreamer, Phonon, Solid, Nepomuk, Sydney...
Reading LWN's coverage of the Linux Plumbers Converence, it occured to me that while I as somewhat experienced Linux user may know many of the components of a modern Linux desktop system, technically interested but less experienced users may have no idea what goes where. So here is a very rough high-level introduction to the “under the hood” components I could think of. As you can see there are many gaps in my knowledge, too...
Sat Sep 13 17:41:13 CEST 2008
Meme time
I see Martin is proud to have started this...
altfrangg, calvados, faegnaescht, gazpacho, gin, gluggsi, lumpesammler, papillon, syydelaervli, tonic, zbasel
If you can guess this, you're invited to gatecrash anytime. If you can guess this and don't live close to me (or did at some time in the past, and didn't use Google), I'd be curious to know how...
Fri Sep 12 11:34:26 CEST 2008
25 pair telco cable color scheme
I had to rewire a DSL concentrator (thunderstorm blew one of the ports...) today. The concentrator has two fan-out cables (input, output) with 25 RJ-11 connectors, color coded, so I had to find the colors of the remaining non-defective ports (there are 12 ports on this concentrator, the other 13 pairs are not connected. Presumably there isn't a 12 pair cable.) Google shows tons of references to the apparently standard 25 pair color code (first pair is white/blue), but unfortunately “my” cable had a light blue/light yellow first pair with most other pairs made up of cables with a base color and a colored stripe. I couldn't find the color chart on the Internet.
Finally, the strange thought of RTFM entered my mind (and I even found the manual of the concentrator), and found that the importer has added a color chart leaflet to it; the cable is referred to as a “Telco50” cable. So here we go:
| Pair | First Wire | Second Wire |
|---|---|---|
| 1 | red | red — white |
| 2 | yellow | yellow — black |
| 3 | green | green — white |
| 4 | blue | blue — white |
| 5 | brown | brown — white |
| 6 | black | black — white |
| 7 | purple | purple — white |
| 8 | orange | orange — white |
| 9 | light green | green — black |
| 10 | blue — black | purple — black |
| 11 | light blue — black | light blue — red |
| 12 | light green — green | light green — blue |
| 13 | light green — black | light green — red |
| 14 | light blue — blue | light blue — green |
| 15 | light yellow — red | light yellow — black |
| 16 | light yellow — green | light yellow — blue |
| 17 | gray | gray — black |
| 18 | gray — green | gray — red |
| 19 | red — black | light red |
| 20 | light red — blue | light red — green |
| 21 | light red — black | light red — red |
| 12 | white | orange — black |
| 13 | white — blue | white — green |
| 24 | white — red | white — black |
| 25 | light blue | light yellow |
(Actually, on the DSL concentrator here this order is listed as “pin” numbers while the 12 ports are assigned in reverse order, starting at 25. The concentrator is a Zyxel VES-1012 and is not in production anymore.)