Definition - What does Channel Bank mean?
Techopedia explains Channel Bank
A channel bank is referred to as a bank because of its processing power that converts a bank of up to 24 or 32 individual channels to a digital and then analog format. These channels contain T1/E1 circuits. A channel bank may also multiplex channel groups into higher bandwidth analog channels.
There are different types of channel banks. Every channel bank contains formatting, which allows a user to achieve the desired results. Channel banks types include T1 circuits, each composed of 24 channels, and D4 channel banks containing digital signal level one (DS-1) signals. The DS-1 ensures that data is formatted with D4 format. Other types of channel banks are D2, D3, and digital carrier trunk. These channels are widely used by most telephone companies.