13:06 Jul 16, 2011 

Thanks

20:36 Jul 13, 2011 

There's a telecoms company called Altitude Telecom. (But the second "altitude" should then be capitalised of course).
http://www.altitudetelecom.fr/

17:24 Jul 13, 2011 

I find no other plausible explanation for the repetition

16:45 Jul 13, 2011 

Besides the fact that the usual interpretation of "a.s.l.", particularly when preceded by a measurement in metres, is "above sea level", where exactly is the level of the ground?

What is odd about the specification is the repetition of "altitude".

16:15 Jul 13, 2011 

I'd say thats the right answer Meirs

15:42 Jul 13, 2011 

The altitude (above sea level) is also defined by the barometric pressure - 760 mm Hg is approx. sea level. I guess "Altitude" here refers to elevation (height) above ground - not above sea level.