I am wanting to know the difference between a clear (unchannelized) circuit and a channelized circuit. The main question is whether the clear channel circuit needs signaling and framing specified? I have got different answers for this.
No, a clear channel does not need signalling /protocols to be specified. It is a clear circuit which you can do what you want with. The end equipment is responsible for framing etc. The end equipment would also be responsible for bit timing.