Agilent Technologies HSSI WanProbe J3916A - Manual (Page 160)

Glossary
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Half-duplex
A form of communication where information can only travel one direction at a
time. See also Full-duplex.
HDLC (High Level Data Link Control)
Level 2 link protocol developed by ISO (International Standards Organization).
Transmissions are frame oriented; starting flag, address field, control field,
optional information field, frame check sequence, and trailing flag. Some
specialized derivatives of HDLC give broader definition to the address field, and
some omit the control field. HDLC is the most general definition of the bit
oriented link protocols. See also SDLC.
Header
Information at the beginning of a cell, frame or packet normally used for
alignment, routing, operations or similar purposes.
I-frame
Information frame (level 2) used to carry user data.
IEEE 802.3 standard
Part of the Institute of Electrical and Electronics Engineers 802 family of LAN
standards. The 802.3 standard defines the physical layer (layer 1) and part of the
data link layer (layer 2) of the ISO OSI reference model for a CSMA/CD LAN.
The IEEE 802.3 standard evolved from Ethernet, but the two networks are not
fully compatible with each other.
IEEE 802.5 Standard
Part of the Institute of Electrical and Electronics Engineers 802 family of LAN
standards. The 802.5 standard defines the physical layer (layer 1) and part of the
data link layer (layer 2) of the ISO OSI reference model for a Token-Ring LAN.
IP Address (Internet Protocol Address)
A 32-bit address that is divided into network-identifier and host-identifier fields,
which are used to identify a particular physical network or a particular device
attached to that physical network (respectively).