User's Manual

Glossary
hwc_glossary.fm
Networking terms and abbreviations
A31003-W1050-U100-2-7619
, March 2008
356 HiPath Wireless Controller, Access Points and Convergence Software V5 R1 , C20/C2400 User Guide
CDR Call Data (Detail) Record
In Internet telephony, a call detail record is a data record that contains information related to
a telephone call, such as the origination and destination addresses of the call, the time the call
started and ended, the duration of the call, the time of day the call was made and any toll
charges that were added through the network or charges for operator services, among other
details of the call.
In essence, call accounting is a database application that processes call data from your switch
(PBX, iPBX, or key system) via a CDR (call detail record) or SMDR (station message detail
record) port. The call data record details your system's incoming and outgoing calls by
thresholds, including time of call, duration of call, dialing extension, and number dialed. Call
data is stored in a PC database
CHAP Challenge-Handshake Authentication Protocol. One of the two main authentication protocols
used to verify a user's name and password for PPP Internet connections. CHAP is more
secure than PAP because it performs a three-way handshake during the initial link
establishment between the home and remote machines. It can also repeat the authentication
anytime after the link has been established.
CLI Command Line Interface.
Collision Two Ethernet packets attempting to use the medium simultaneously. Ethernet is a shared
media, so there are rules for sending packets of data to avoid conflicts and protect data
integrity. When two nodes at different locations attempt to send data at the same time, a
collision will result. Segmenting the network with bridges or switches is one way of reducing
collisions in an overcrowded network.
Datagram A datagram is "a self-contained, independent entity of data carrying sufficient information to
be routed from the source to the destination computer without reliance on earlier exchanges
between this source and destination computer and the transporting network." (RFC1594). The
term has been generally replaced by the term packet. Datagrams or packets are the message
units that the Internet Protocol deals with and that the Internet transports.
Decapsulation See tunnelling.
Device Server A specialized, network-based hardware device designed to perform a single or specialized set
of server functions. Print servers, terminal servers, remote access servers and network time
servers are examples of device servers.
DHCP Dynamic Host Configuration Protocol. A protocol for assigning dynamic IP addresses to
devices on a network. With dynamic addressing, a device can have a different IP address
every time it connects to the network. In some systems, the device's IP address can even
change while it is still connected. DHCP also supports a mix of static and dynamic IP
addresses.
DHCP consists of two components: a protocol for delivering host-specific configuration
parameters from a DHCP server to a host and a mechanism for allocation of network
addresses to hosts. (IETF RFC1531.)
Option 78 specifies the location of one or more SLP Directory Agents. Option 79 specifies the
list of scopes that a SLP Agent is configured to use.(RFC2610 - DHCP Options for Service
Location Protocol)
Term Explanation
Table 29