channel banks

See Asterisk Channel Bank for help with setting up Asterisk with channel banks.

A channel bank is a device at a telephone company central office (public exchange) that converts analog signals from home and business users into digital signals to be carried over higher-speed lines between the central office and other exchanges. The analog signal is converted into a digital signal that transmits at a rate of 64 thousand bits per second (Kbps). This 64 Kbps signal is a standard known as a DS0 signal. The signal is multiplexed with other DS0 signals on the same line using time-division multiplexing ( TDM ) . Usually, the digital information is put on each DS0 signal using pulse code modulation (PCM). The channel bank is the foundation 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 changes analog voice and data signals into a digital format. It is called a "bank" because it can contain enough processing power to convert a bank of up to 24/32 individual channels to a digital format, and then back to analog again. The 24/32 channels comprise a T1/E1 circuit. A channel bank can also multiplex a group of channels into a higher bandwidth analog channel.

Modern channel banks have a small foam factor of about 60 channles per a shelf (19" * 3U), supports variants CAS, any combination of multiple FXO/FXS cards, a line characteristics(R, L, C) measuring card, a remote management card with SQL backended GUI, and two redundant DC power modules. All cards and modules should be hot plugable without affecting any functionality of other.



See Asterisk Channel Bank for help with setting up Asterisk with channel banks.

A channel bank is a device at a telephone company central office (public exchange) that converts analog signals from home and business users into digital signals to be carried over higher-speed lines between the central office and other exchanges. The analog signal is converted into a digital signal that transmits at a rate of 64 thousand bits per second (Kbps). This 64 Kbps signal is a standard known as a DS0 signal. The signal is multiplexed with other DS0 signals on the same line using time-division multiplexing ( TDM ) . Usually, the digital information is put on each DS0 signal using pulse code modulation (PCM). The channel bank is the foundation 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 changes analog voice and data signals into a digital format. It is called a "bank" because it can contain enough processing power to convert a bank of up to 24/32 individual channels to a digital format, and then back to analog again. The 24/32 channels comprise a T1/E1 circuit. A channel bank can also multiplex a group of channels into a higher bandwidth analog channel.

Modern channel banks have a small foam factor of about 60 channles per a shelf (19" * 3U), supports variants CAS, any combination of multiple FXO/FXS cards, a line characteristics(R, L, C) measuring card, a remote management card with SQL backended GUI, and two redundant DC power modules. All cards and modules should be hot plugable without affecting any functionality of other.



Created by: shep, Last modification: Mon 29 of May, 2006 (07:28 UTC) by NetSapiens
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