I have just learned that my land-line, (416) 604-4204, has been telling many callers that the ‘phone has been disconnected and worse, it has been doing so for about two weeks. As the ‘phone has retained its dial tone and ability to make out-going calls through this period, I had no reason to suspect a problem.
Bell Canada advises that the fault is on their premises and a technician will be fixing the problem during the afternoon on November 29. Until then, if you need to contact me, please send me an eMail with your number and I will call you.
Update 2018-11-29: Bell did nothing today. Maybe tomorrow.