Avocent DSView 3 Installer/User Manual page 369

Power device
An Avocent or supported third party cascade device that allows the remote controlling of target
device power.
PPP (Point to Point Protocol)
PPP is a set of industry-standard framing and authentication protocols included with Windows
NT Remote Access Service to ensure interoperability with third party remote access software.
PPP negotiates configuration parameters for multiple layers of the OSI (Open Systems
Interconnection) model.
Positive hysteresis
Positive hysteresis is the unsigned number of counts subtracted from the raw threshold value,
which creates the re-arm point for all sensor thresholds that are greater than zero (0). A
positive hysteresis value of 0 indicates that any thresholds greater than zero do not
contain hysteresis.
SDR repository device
An SDR repository device is the logical management device that provides a sensor data
records (SDR) system interface, which in turn, provides a set of SDR storage and
retrieval commands.
Serial session
A serial session is a type of target device session in which the target device contains a serial
connection (typically a Linux server TTY port or a router) and is connected through a CPS or
CCM appliance. A Telnet Viewer connection exists between the DSView 3 software client and
the CPS or CCM appliance. The appliance converts the Telnet information to
serial information.
Server
A server is a computer or device on a network that manages network resources. For example:
• A file server is a computer and storage device dedicated to storing files. Any user on the
network can store files on the server.
• A print server is a computer that manages one or more printers.
• A network server is a computer that manages network traffic.
• A database server is a computer system that processes database queries.
Servers are often dedicated, meaning that they perform no other tasks besides their server
tasks. However, on multiprocessing operating systems, a single computer can execute several
programs at once. In this case, a server may refer to the program that is managing resources
rather than the entire computer.
Session
When used alone, a session refers to a target device session. See the definition of a target
device session for details.
Appendices 351