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Admin
Admin
Doesn't your list change depending on where you are? From what I've read about the nanp some areas (overlays) must use 10 digit dialling, or do they still need the 1 so [2-9] would be an error?
But yes an international number can be anywhere between 7 and 15 digits, including country code, excluding access code.
Admin
Typically, yes. "You must first dial a 1, then the area code".
Admin
That would be forwards compatibility to mobile cellular phones, since the POTS accept DTMF tones only. It's a UI thing since cellular digital networks use out of band signaling so DTMF is not used for connection (maybe during a call to an IVR). But if it's part of DECT maybe it's required for ISDN? I don't have experience in that area.
Admin
then it is in band but not really used for connecting, even when the IVR transfers. The IVR will just collect the DTMFs and transform that info in a number to dial on that line or a secondary line.
Almost always in-band. ISDN wasn't designed for communicating much meta data about the calls it carries.Admin
Admin
https://www.youtube.com/watch?v=O_rMBQD5HAA
Admin
Could you censor the company name and sender's e-mail address? They've got real company name and real surname, respectively.