Panasonic 1200N User Manual

Oscillator: A device for generating an analog test signal or an electronic circuit that 
creates a single frequency signal.

Open Systems Interconnection: A seven (7) layer architecture model for 
communications systems developed by the ISO for the interconnection of data 
communications systems. Each layer uses and builds on the services provided by 
those below it.

Usually taken to be SONET/SDH (which itself has 4 layers...) but can be other 

things as well. The PHY deals with medium-related issues.

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Open Shortest Path First: A link-state routing algorithm that is used to calculate 
routes based on the number of routers, transmission speed, delays and route cost. 

Organizationally Unique Identifier: The OUI is a three-octet field in the IEEE 
802.1a defined SubNetwork Attachment Point (SNAP) header, identifying an 
organization which administers the meaning of the following two octet Protocol 
Identifier (PID) field in the SNAP header. Together they identify a distinct routed 
or bridged protocol. 

A node whose exclusion from its containing peer group would significantly 
improve the accuracy and simplicity of the aggregation of the remainder of the peer 
group topology. 

A link to an outside node. 

A node which is participating in PNNI routing, but which is not a member of a 
particular peer group. 

1.ICell Relay Retreat. Indiana University 25 August 1996
http://cell-relay.indiana.edu/cell-relay/