On 2018 Jul 09 16:01:50, you wrote to Kees van Eeten:

 KvE>> My guess is that your phone generates a dial tone when it
 KvE>> establishes a free channel to the exchange.

 BF> Yeah, that's probably it. Just as you get a dial tone from your VoIP
 BF> "modem" and not from the internet.

exactly :)

)\/(ark

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