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A channel bank is the foundation of digital telecommunications transmission. It essentially converts the analog signal from residential and business users into a digital format that can be transmitted over high speed circuits in the network. This network element is located at the telephone company central office. First, the analog signal is converted into a digital signal that has a rate of 64 kbps; this signal is known as a DS0. After creating a digital signal, channel banks then can combine multiple DS0s onto the same line. They use Time Division Multiplexing (TDM) to combine several low speed signals onto one line. The act of combining lower-speed signals onto a higher one is known as multiplexing. Demultiplexing refers to the reverse procedure: dividing a higher-speed signal into several lower ones. A T1 channel bank can transform 24 individual channels into a digital format, and then also convert them back to 24 analog channels again. A T1 is the basis of digital transmission; it contains 24 voice channels (known as DS0s) and has a rate of 1.544 Mbps. Web Design - Small business custom website from EverestWebDesign.com. Rich Christiansen - Management metaphors at RichChristiansen.com. |
Channel bank
