Carlton, one of the owners of the UK’s ITV television channel, publish private system status data on the public teletext system. Among the data displayed are system errors (for example, the common ‘File execution error line 3’).
Below is what the secret page looked like on 8th July 2003. It is still there at the time of this update (18th April 2007).
P6AA Carlton Plus 6AA Tue 8 21:03:19
21:03 8 Jul 2003 18:20 7 Jan 2003
17:06 8 Jul 2003
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0 0 0 0 0 0 16 0
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287 287 yes no yes no 121 708
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08/07/03 14:52 Comms TIMEOUT port 2
08/07/03 15:56 PDC - Link DYING
08/07/03 15:56 PDC - Link RESTORED
08/07/03 16:24 Comms TIMEOUT port 2
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EXI27 S1 D10 <PAGE DOES NOT EXIST
EXI28 S1 D10 <ACTION SUCCESSFUL
EXI32 S1 D10 <ACTION SUCCESSFUL
EXI07 S1 D10 <ACTION SUCCESSFUL
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0 0 2C 1E 00 08/07 20:00 1
0 0 2C 1E 00 00/15 28:63 0
0 0 00 00 00 00/00 00:00 0
0 0 00 00 00 00/00 00:00 0
13
How to access it
Visit page 699 (test page), and press the red button (for which no menu item is shown). Page 6AA may take some time to appear, as it is not broadcast as frequently as most pages.