On Mon, Mar 28, 2016 at 9:31 AM, Ken Dibble krdibble@stny.rr.com wrote:
Is it an "industry standard" for these systems to fail to pass through basic signaling from the PSTN (public switched telephone network) to the ears of people using the phones?
We recently purchased such a system and, while it transmit a "ringing" signal when we dial a number outside our system, it does not transmit "busy" signals when the line we dialed is engaged. It also does not transmit fax tones when we dial a fax number (useful for diagnosing faxing problems), nor does it transmit recorded audio from a phone company, such as "The number you have reached is no longer in service" (useful for what should be obvious reasons).
None of that sounds right. A VOIP/PBX system should have more features than the old copper circuits, not less.