I'm seeking providers of conference calling services.
A) Managed groups of 10-75 people. Management means web page showing directory numbers of callers & way to have nametags on number. Page would show who was talking, etc.
B) Web page control should have mute controls; callers are normally muted but can signal ("raise hand") to request chance to speak.
C) NOT "800" service; just a US 10D number. If 800 is also available, that's OK but not required. There is no reason to pay for 800 inbound from phones with unmetered LD.