Lucent Technologies 8.2 User Manual

Issue 1

April 2000

Glossary and abbreviations 

1648

 

Occupational Safety and Health Act

Open Systems Interconnect

Operations Support System

Operational Support System Interface

Optical time-domain reflectometer

The work state that indicates that an agent is currently active on another split’s call, or in ACW for another 
split.

Originating Test Line

Outgoing trunk queuing

A PBX that routes an incoming call on a trunk administered for Supplementary Services Protocol B to a trunk 
not administered for Supplementary Services Protocol B.

Packet control

A group of bits (including a message element, which is the data, and a control information element (IE), 
which is the header) used in packet switching and transmitted as a discrete unit. In each packet, the message 
element and control IE are arranged in a specified format. See also 

and

.

A wide-bandwidth bus that transmits packets.

A data-transmission technique whereby user information is segmented and routed in discrete data envelopes 
called packets, each with its own appended control information, for routing, sequencing, and error checking. 
Packet switching allows a channel to be occupied only during the transmission of a packet. On completion of 
the transmission, the channel is made available for the transfer of other packets. See also 

BX.25

and

.

Packet assembly/disassembly

A telecommunications channel used to access an amplifier for loudspeaker paging.