Panasonic 1200N User Manual

Advanced Research Projects Agency NETwork: A Department of Defense data 
network, developed by ARPA, which ties together many users and computers in 
universities, government, and businesses. ARPANET has been the forerunner of 
many developments in commercial data communications, including packet 
switching, which was first tested on a large scale on the network. ARPANET is a 
predcessor of the Internet. It was started in 1969 with funds for the Defense 

Department’s Advanced Projects Research Agency.

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Abstract Service Primitive: An implementation-independent description of an 
interaction between a service-user and a service-provider at a particular service 
boundary, as defined by Open Systems Interconnection (OSI). 

Cell that provides a service to an upper layer entity or ATM Layer Management 
entity (ATMM-entity). 

Cell switching control (point-to-point connection, point-to-multipoint connection)

Not occurring at the same time; beginning each operation only after finishing the 
preceding one.

A multiplexing technique in which a transmission capability is organized in a prior 
unassigned time slots. The time slots are assigned to cells upon request of each 
application's instantaneous real need. 

Asynchronous Transfer Mode: A transfer mode in which the information is 
organized into cells. It is asynchronous in the sense that the recurrence of cells 
containing information from an individual user is not necessarily periodic. ATM is 
a high bandwidth, low-delay, connection-oriented, packet-like switching and 
multiplexing technique which will form  the basis for future offering of Broadband 
ISDN(B-ISDN).Usable capacity is segmented into 53-byte fixed-size cells, 
consisting of header and information fields, allocated to services on demand.

1.Newton’s Telecom Dictionary