A channel bank is a device that converts analog signals into digital signals and vice versa. It is used for multiplexing and demultiplexing a group of communication channels into a higher bandwidth or digital bit rate channel. In an enterprise telephone exchange, individual phone lines are separated from high-capacity phone lines originating from a central telephone switch. A channel bank processes a bank of up to 24 or 32 individual channels into digital and analog format. These channels contain T1/E1 circuits which can also be multiplexed into higher bandwidth analog channels.
A channel bank is located in the central office of a telephone company where it converts analog signals from residential and business customers into digital signals that are transmitted over high-speed lines between the central office and other exchanges. The DS0 signal is transmitted at a rate of 64Kbps and is used as a standard for digital signals. The TDM multiplexes digital information on each DS0 signal using pulse code modulation (PCM).
The channel bank is the basis for all digital telecommunication transmissions. It is the part of a carrier multiplex terminal that multiplexes a group of channels into a higher bit rate digital channel and demultiplexes these aggregates back into individual channels. A channel bank is capable of containing enough processing power to convert a bank of up to 24 individual channels to digital format and then back to analog format.
FAQs
What is the purpose of a channel bank?
A channel bank is used for multiplexing and demultiplexing a group of communication channels into a higher bandwidth or digital bit rate channel in an enterprise telephone exchange. It also converts analog voice and data signals into a digital format and vice versa.
What is TDM?
TDM stands for time division multiplexing. It is a technique used to share a communication medium by dividing it into time slots, where each channel gets a fixed amount of time in each slot. It is used to multiplex digital information on each DS0 signal using PCM.
How many individual channels can a channel bank process?
A channel bank can process a bank of up to 24 or 32 individual channels into digital and analog format. These channels contain T1/E1 circuits which can also be multiplexed into higher bandwidth analog channels.
Conclusion
A channel bank is an important device for digital telecommunication transmissions. It converts analog signals from residential and business customers into digital signals that are multiplexed into higher bandwidth channels. It is capable of processing a bank of up to 24 or 32 individual channels into digital and analog format, and can also multiplex these channels into higher bandwidth analog channels.
