Glossary I
Centillion 1200N ATM Switch User Manual B-33
NTP 297-8103-903
ICD
International Code Designator: This identifies an international organization. The
registration authority for the International Code Designator is maintained by the
British Standards Institute. The length of this field is two octets.
ICR
Initial Cell Rate: An ABR service parameter, in cells/sec, that is the rate at which
a source should send initially and after an idle period.
IDU
Interface Data Unit: The unit of information transferred to/from the up per lay er in
a single interaction across the SAP. Each IDU contains interface control
information and may also contain the whole or part of the SDU.
IEC
International Electrotechnical Commission: Founded in 1906, this world
organization prepares and publishes internation standards for all elictrical,
electronic, and related technologies. The IEC was founded as a result of a resolution
passed at the International Electrical Congress held in St. Lo uis (USA) in 1904. The
membership consists of more than 50 participating companies, including all the
world’s major trading nations and a growing number of industrializing countries.1
Inter-exchange Carrier:
A long distance telephone company.
IEEE
Institute of Electrical and Electronics Engineers: A worldwide engineering
publishing and standards-making body for the electronics industry.
IEEE 802.3
A Local Area Network protocol suite commonly known as Ethernet. Ethernet has
either a 10 Mbps or 100 Mbps throughput and uses Carrier Sense Multiple Acc ess
bus with Collision Detection CSMA/CD. This method allows users to share the
network cable. However, only one station can use the cable a t a time. A variety of
physical medium dependent protocols are supported.
1.International Electrotechnical Commission Home Page 3 January 2000
http://www/iec.ch/gnote1-e.htm