Phone tone
Before my current job I'd never used computer integrated telephony. Yes, Skype and other VoIP systems but not CIT proper. It's interesting to see the results of the system trying to understand the tones it is 'hearing' it really isn't very good at it. What I hear as a slight 'blip' in one network's ring tone (I think it's O2) the computer obviously hears as the ring tone stopping, so it serves up the next page ready for an answered call to be logged/coded, even though ring tone is continuing. Of course these tones were originally intended for human ears/brains and with the legacy public switched telephone network holding out this kind of lumpy system will continue. In the old analogue days the phone system worked by setting up a metallic speech path from caller to called party. The callers exchange (IIRC) would send ringing current down this path to the called party's phone toring the bell, and the called party's exchange would put ring ton...