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Step 2: Choose your tome zone
Please select the tome zone where you are located.
Step 3: Set your Internet connection
Please check with your ISP the connection type of the ADSL line.
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Step 4: Input the data supplied by your ISP
To know more about the explanation of each setting, please refer to Section 5.2.
Step 5: Re-start your ADSL router
Click “Next” to save the settings and restart the router.
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5.2.
Interface Setup
5.2.1.
Internet
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z
ATM VC
Parameter
Description
Virtual Circuit
VPI (Virtual Path Identifier) and VCI (Virtual Channel
Identifier define a virtual circuit.
VPI
VPI is a virtual path determines the way an ATM cell
should be routed. The VPI is an 8-bit (in UNI) or 12-bit (in
NNI) number that is included in the header of an ATM
cell. The valid range for the VPI is 0 to 255. Enter the VPI
assigned by the ISP.
Parameter
Description
VCI
VCI is the label given to an ATM VC to identify it and
determine its destination. The VCI is a 16-bit number that
is included in the header of an ATM cell. The valid range
for the VCI is 32 to 65535. Enter the VCI assigned by the
ISP.
ATM QoS
CBR (Constant Bit Rate) – This class is used for
emulating circuit switching. The cell rate is constant with
time. Select CBR to specify fixed (always on) bandwidth
for voice or data traffic.
UBR (Unspecified Bit Rate) – Select UBR for applications
that are non-time sensitive, such as e-mail.
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.
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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.
Parameter
Description
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.
z
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

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