SmartWare architecture terms and definitions
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SmartWare Software Configuration Guide
A • Terms and definitions
Comfort Noise
Comfort noise is generated at the remote end of the silent direction to
avoid the impression that the connection is dead. See also
Silence Com-
pression
.
Command Line Interface
An interface that allows the user to interact with the SmartWare operating
system by entering commands and optional arguments. Other operating
systems like UNIX or DOS also provide CLIs.
Configuration Download
A configuration file is downloaded from a remote TFTP server via TFTP to
the persistent memory (nvram:) or volatile memory (system:)of a Smart-
Node.
Configuration File
The configuration file contains the CLI commands, which are used to con-
figure the SmartNode.
Configuration Server
A central server used as a store for configuration files, which are down-
loaded to or uploaded from a SmartNode using TFTP.
Configuration Upload
A configuration file is uploaded from the persistent memory (nvram:) or
volatile memory (system:) of a SmartNode via TFTP to a TFTP server.
Context
Represents one specific networking technology or protocol, e.g. IP or cir-
cuit switching.
Data Port
Physical port connected to a network element or used for data transfer.
Dejitter Buffer
The element used to compensate variable network delays. Storing packets
in a dejitter buffer before they are transferred to the local ISDN equip-
ment, e.g. telephone, a variable delay is converted into a fixed delay, giv-
ing voice a better quality. See also
Jitter
.
Digit Collection
Some devices (PBX, ISDN network, remote gateways and gatekeepers)
may require bloc sending of the dialed number. Digit collection collects
the overlap dialed digits and forwards them in a single call setup message
Driver Software Download
A driver software image is downloaded from a remote TFTP server to the
persistent memory (flash:) of a SmartNode.
Driver Software Image
The software used for peripheral chips on the main board and optional
PMC interface cards is stored in the persistent memory (flash:) of a Smart-
Node.
DTMF Relay
DTMF relay solves the problem of DTMF distortion by transporting DTMF
tones over low-bit-rate codecs out-of-band or separate from the encoded
voice stream
Echo Canceller
Some voice devices unfortunately have got an echo on their wire. Echo
cancellation provides near-end echo compensation for this device.
Factory Configuration
The factory configuration (factory-config) represents the system default set-
tings and is stored in the persistent memory (nvram:) of a SmartNode.
Fast Connect
A “normal” call setup with H.323 requires several TCP segments to be
transmitted, because various parameters are negotiated. Since a normal
call setup is often too slow, fast connect is a new method of call setup that
bypasses some usual steps in order to make it faster.
Flash Memory
Persistent memory section of a SmartNode containing the Application
Image, Bootloader Image and the driver software Image.
Term or Definition
Meaning
