👉 In the context of telecommunications, a subchannel is a small segment of a larger channel. It's analogous to a subarray in computer science, where each element of the array represents a different part or component within the whole. In the case of a communication system, a subchannel could be used for data transmission, such as between two stations transmitting at different frequencies. For example, consider a telephone network that uses two channels for voice calls: one is a main channel (the "primary" channel