Interphase Tech ispan 5535 pri Manual Do Utilizador

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See PRI.

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See PRI.

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Standards that govern the LLC within the Data Link 

layer of the OSI model. LLC frames carry user information between 

the nodes on a network and define the transmission of a frame between 

two stations. These standards are common across the various lower 
level standards within the Data Link and the Physical layers.

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Standards that govern the use of the CSMA/CD (Carrier 

Sense Multiple Access/Collision Detection) network access method 
used by Ethernet networks.

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Standards that govern the use of the token ring indicator 

and frame priority.

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A device, usually a user interface card, that physically con-

nects an end station to the network medium (for example, twisted pair, 

coaxial, fiber).

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PRI alarm, also known as Keep 

Alive or Blue signal. An unframed all-ones signal sent to maintain 
transmission continuity.

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A method of digitally encoding data 

as electrical signals on a link.

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An organization 

which coordinates, develops, and publishes standards used in the 

United States.

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The name of a central office switch manufactured by 

AT&T. These switches use Custom (proprietary) or National ISDN-1 
(NI-1) software. ESS stands for Electronic Switching System.

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Signal power lost in a transmission medium as the sig-

nal travels from sender to receiver.

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Α method of digitally 

encoding data on a link. A modified form of AMI used in the USA.

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Capacity for transmitting data through a given circuit. 

Generally, the greater the bandwidth, the more information can be sent 
through a circuit during a given amount of time.