User's Manual

Trailblazer Installation and User Manual version 1.03 51
HDLC
Acronym for High Level Data Link Control. It is a generic link-level communications protocol developed
by ISO, that manages synchronous code-transparent serial information transfer over a link connection.
See also SDLC.
host computer
The primary or controlling computer in a multiple computer operation.
in-band signaling
is signaling over the same channel used for data.
IP
Acronym for Internet Protocol. It provides for transmitting blocks of data between hosts identified by
fixed-length addresses.
ISDN
Acronym for Integrated Services Digital Network. It is a network architecture that enables end-to-end
digital connections. It supports diverse services through integrated access arrangements and defines a
limited set of standard, multipurpose interfaces for equipment vendors, network providers, and
customers.
LAN
Acronym for Local Area Network. A privately owned network that offers high-speed communications
channels connecting information processing equipment in a limited geographic area.
MIB
Acronym for Management Information Base. It is a database of network management information
used by SNMP.
multi-point
Is a configuration or topology designed to transmit data between a central site and a number of remote
terminals on the same circuit. Individual terminals are not able to send data to each other.
out-of-band signaling
Is signaling that is separated from the channel carrying information (voice, data, video, etc.) by a filter.
packet
Is a bundle of data that contains both control information and the data itself. The control information is
used for routing the packet through a network to its final destination.
packet-switching network
Is a telecommunications network based on packet-switching technology, wherein a transmission channel
is occupied only for the duration of the transmission of the packet.
parameter
Is a numerical code that controls an aspect of terminal and/or network operation. Parameters control
page size, data transmission speed, and timing options.
ping
Is an internet protocol standard that provides loop-back on demand for any device in an IP network. One
device "pings" another by sending a loop-back request to the device's IP address.
point-to-point
Is a type of communications link that connects a single device to another single device, such as a Base
unit to a CPE unit.
remote configuration
A feature that allows the CPE unit to be configured from the Base unit or VT-100 compatible terminal.
router
Is a device that supports LAN-to-LAN communications. IT reads logical addressing information and
directs data across a network to its destination. See also bridge.
SNMP
Acronym for Simple Network Management Protocol. It is a control and reporting scheme widely
used to manage devices from different vendors and operates on top of the Internet protocol.
switched network
Is a network of dial-up telephone lines that uses circuit switching to provide communications services to
network users.
synchronous
A method of data transmission in which timing information is sent along with the transmitted data.
Synchronous communication is achieved when timing shares a single clock.