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Dialtone

R1 & C5

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Just out of interest, how would you know if you found a number that terminates on a C5 or R1? I know there are C5's and R1's still out there in places.

I know it's pretty much useless these days trying to box them as from my country they will mute the mouth piece to stop tones being sent untill the call is complete... I get free calls from my mobile call plan, so no need to mess around with things that could land you in trouble anyways!

:D

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I know it's pretty much useless these days trying to box them as from my country they will mute the mouth piece to stop tones being sent untill the call is complete.

Not necessarily. It depends on the network, and how it's configured. Muting forward audio is usually a software configureable option, so you may have better luck with a reseller or an alternate carrier access code. Since BT looks like they're using MCI to terminate to the US, they could very well be passing audio before supervision to the states. Try placing a call to this number from a BT line;

216-822-9700 - This was the number of an AT&T rep I was talking to. Try calling it. AT&T trying to sound like they aren't evil is a little funny, but since the number doesn't supe, it's nice for testing whether or not your long distance carrier passes audio before supervision.
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Not necessarily. It depends on the network, and how it's configured. Muting forward audio is usually a software configureable option, so you may have better luck with a reseller or an alternate carrier access code. Since BT looks like they're using MCI to terminate to the US, they could very well be passing audio before supervision to the states. Try placing a call to this number from a BT line;

216-822-9700 - This was the number of an AT&T rep I was talking to. Try calling it. AT&T trying to sound like they aren't evil is a little funny, but since the number doesn't supe, it's nice for testing whether or not your long distance carrier passes audio before supervision.

Wow, I just went through 4 different IVRs before being put on hold for high call volumes and it seems that my VoIP provider passes audio before supervision :)

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