4. Quick Start
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AirLive WT-2000ARM User’s Manual
rtVBR (real time Variable Bit Rate) – This class is similar to nrtVBR
but is designed for applications that are sensitive to cell-delay
variation. Examples for real-time VBR are voice with speech
activity detection (SAD) and interactive compressed video.
nrtVBR (non-real time Variable Bit Rate) – This class allows users
to send traffic at a rate that varies with time depending on the
availability of user information. Statistical multiplexing is provided
to make optimum use of network resources. Multimedia e-mail is
an example of nrtVBR.
PCR
Divide the DSL line rate (bps) by 424 (the size of an ATM cell) to
find the PCR (Peak Cell Rate). This is the maximum rate at which
the sender can send cells.
SCR
SCR (Sustain Cell Rate) is the average rate, as measured over a
long interval, in the order of the connection lifetime.
MBS
MBS (Maximum Burst Size) refers to the maximum number of
cells that can be sent at the peak rate. Type the MBS, which is less
than 65535.
Encapsulation
The router can be connected to your service provider in any of the following ways.
Parameter
Description
Dynamic IP Address Obtain an IP address automatically from your service provider.
Static IP Address
Uses a static IP address. Your service provider gives a static IP
address to access Internet services.
PPPoE/PPPoA
PPPoE (PPP over Ethernet) and PPPoA (PPP over ATM) are
common connection methods used for xDSL.
Bridge Mode
Bridge Mode is a common connection method used for xDSL
modem.
