Channel Service Unit - définition. Qu'est-ce que Channel Service Unit
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Qu'est-ce (qui) est Channel Service Unit - définition

TELECOMMUNICATIONS EQUIPMENT

channel service unit         
<communications> (CSU) A type of interface used to connect a terminal or computer to a digital medium in the same way that a modem is used for connection to an analogue medium. A CSU is provided by the communication carrier to customers who wish to use their own equipment to retime and regenerate the incoming signals. The customer must supply all of the transmit logic, receive logic and timing recovery in order to use the CSU, whereas a digital service unit DSU performs these functions. (1995-01-30)
Channel service unit         
In telecommunications, a channel service unit (CSU) is a line bridging device for use with T-carrier, which
data channel         
PHYSICAL OR LOGICAL CONNECTION USED FOR TRANSMISSION OF INFORMATION
Channel (communications); Communications channel; Input-output channel; Channel model; Data channel; Coherent transmission; Transmission channel; Voice channel
<communications> A channel (on a BRI or PRI line) used to carry control information, to set up connections on the associated bearer channels. The name wasn't too bad back when users were sending voice (not data) over the {bearer channels}, but in 1997 it's quite a misnomer. (1997-03-10)

Wikipédia

Channel service unit

In telecommunications, a channel service unit (CSU) is a line bridging device for use with T-carrier, which

  • is used to perform loopback testing;
  • may perform bit stuffing;
  • may also provide a framing and formatting pattern compatible with the network;
  • provides a barrier for electrical interference from either side of the unit; and
  • is the last signal regeneration point, on the loop side, coming from the central office, before the regenerated signal reaches a multiplexer or data terminal equipment (DTE).