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[ADSL]
The ADSL screen gives you information about how much data your router has
transmitted or received across the ADSL connection. Click on REFRESH to update the
screen.
3.6 WAN Configuration
3.6.1 VC Configuration
Go to Interface Setup -> Internet. To add or delete ADSL VC configuration, these
information provide by ISP.
ATM settings are used to connect to your ISP. Your ISP provides VPI, VCI, settings to
you. In this Device, you can totally setup 8 PVCs on different encapsulations if you
apply 8 different virtual circuits from your ISP. You need to activate the VC to take
effect. For PVCs management, you can use ATM QOS to setup each PVC traffic line’s
priority.
Virtual Circuit: Select the VC number you want to setup.
VPI: Virtual Path Identifier. The valid range for the VPI is 0 to 255.
VCI: Virtual Channel Identifier. The valid range for the VCI is 1 to 65635 (0 to 31 is
reserved for local management of ATM traffic).
ATM QoS: Select the Quality of Service types for this Virtual Circuit. The ATM QoS
types include CBR(Constant Bit Rate), VBR(Variable Bit Rate) and UBR (Unspecified
Bit Rate). These QoS types are all controlled by the parameters specified below,
including PCR, SCR, and MBS.
PCR: Peak Cell Rate (PCR) is the maximum rate at which the sender can send cells.
This parameter may be lower (but not higher) than the maximum line speed. 1 ATM
cell is 53 bytes (424 bits), so a maximum speed of 832 Kbps gives a maximum PCR of
1962 cells/sec. This rate is not guaranteed because it is dependent on the line speed.
SCR: Sustained Cell Rate (SCR) is the mean cell rate of a bursty, on-off traffic source
that can be sent at the peak rate, and a parameter for burst-type traffic. SCR may not be
greater than the PCR; the system default is 0 cells/sec.