In reply to a post by billford:

In reply to a post by MHC:

if you receive one now it will be around 135.85 Ms out.

That's over 4 years...

Now it would be 135.86Ms out !

Does not the exact value depend on how far away you are from the Anthorn transmitter?

Whilst agreeing that the various sources do give relatively accurate times, which one IF ANY does the relevant Road/Policing Authority use, as that is what any (non-) Voilations would be based on.

Not in this case ... we are looking at the amount of error that would be seen if someone was to today receive a transmission that had originated from Rugby.

The Anthorn to London delay/error is about 1.6 ms and it does vary depending on how far away you are.

What really amuses, and gets to, me is that the 6 pips on the BBC were introduced to replace the previous 3, with the sixth being slightly lengthened compared to the other five and to be indicative of the actual point.

I assume this was meaning the point was within that pip, so accurate to a few ms. However, the exercise is now rather pointless given the multi-second delay on DAB radio.

As for Big Ben bongs on the television - bad enough on analogue, poor on digital, and ridiculous over the net. That's when the programme starts on the hour. When it doesn't, which seems normal, it is simply anachronistic heritage invocation. As much use as data transmission by smoke-signal.

In reply to a post by Anonymous:

which one IF ANY does the relevant Road/Policing Authority use

Damned if I know... probably the copper's watch.

And you try to claim innocence on the basis of a few milliseconds, get a good lawyer first

Ok i see now, thats what its like in the in the ideal world of telecom.

Edited by NilSatisOptimum (Thu 14-Jul-11 23:26:06)

as a non standard service it could cost more as it has to be developed and requires different systems. If you don't connect the line to the exchange switch there's no diagnostic capability or easy way to test what "number" the line is connected to, for example, nor a dial tone to indicate "pair in use".

In theory your call setup costs and call charges should pay for the telephony element, the line rental for the err rental of the line ?

as a non standard service it could cost more as it has to be developed and requires different systems. If you don't connect the line to the exchange switch there's no diagnostic capability or easy way to test what "number" the line is connected to, for example, nor a dial tone to indicate "pair in use".

Not quite, you'd connect the line through TAMS like current MPF circuits are, this would allow testing from Openreach, and allow dummy dial tone, or remote tones to be easily put on the line. The issue is indicating that there is a service on the line, in which case you would just apply DC whetting as is currently done on SDSL circuits, which of course are basically doing 'naked DSL' already.

do you have problems working out what the pair is doing, when you can't ask the test service what the number is ?