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 Chapter 5 Device Network Settings
Vantage CNM User’s Guide
93
ATM QoS Type
Select CBR (Constant Bit Rate) to specify fixed (always-on) bandwidth for 
voice or data traffic. Select UBR (Unspecified Bit Rate) for applications 
that are non-time sensitive, such as e-mail. Select VBR (Variable Bit Rate) 
for bursty traffic and bandwidth sharing with other applications. 
Cell Rate
Cell rate configuration often helps eliminate traffic congestion that slows 
transmission of real time data such as audio and video connections. 
Peak Cell Rate
Divide the DSL line rate (bps) by 424 (the size of an ATM cell) to find the 
Peak Cell Rate (PCR). This is the maximum rate at which the sender can 
send cells. Type the PCR here.
Sustain Cell Rate
The Sustain Cell Rate (SCR) sets the average cell rate (long-term) that 
can be transmitted. Type the SCR, which must be less than the PCR. 
Note that system default is 0 cells/sec. 
Maximum Burst Size
Maximum Burst Size (MBS) refers to the maximum number of cells that 
can be sent at the peak rate. Type the MBS, which is less than 65535. 
Login Information
(PPPoA and PPPoE encapsulation only)
Service Name
(Appears when you use 
PPPoE encapsulation)
This field is only available when PPPoE encapsulation is selected. Type 
the PPPoE service name provided to you. PPPoE uses a service name to 
identify and reach the PPPoE server.
PPPoE + 
PPPoE_Client_PC 
(Appears when you use 
PPPoE encapsulation)
This field is only available when PPPoE encapsulation is selected.
Select the check box to enable PPPoE pass through. In addition to the 
device's built-in PPPoE client, you can enable PPPoE pass through to 
allow up to ten hosts on the LAN to use PPPoE client software on their 
computers to connect to the ISP via the device. Each host can have a 
separate account and a public WAN IP address. PPPoE pass through is 
an alternative to NAT for application where NAT is not appropriate. 
Disable PPPoE pass through if you do not need to allow hosts on the LAN 
to use PPPoE client software on their computers to connect to the ISP.
User Name
Enter the user name exactly as your ISP assigned. If assigned a name in 
the form 
user@domain
 where domain identifies a service name, then 
enter both components exactly as given.
Password
Enter the password associated with the user name above.
IP Address
This option is available if you select Routing in the Mode field.
A static IP address is a fixed IP that your ISP gives you. A dynamic IP 
address is not fixed; the ISP assigns you a different one each time you 
connect to the Internet. The Single User Account feature can be used with 
either a dynamic or static IP address.
Select Obtain an IP Address Automatically if you have a dynamic IP 
address; otherwise select Static IP Address and type your ISP assigned 
IP address in the IP Address field below. 
Connection 
(Appears when you use 
PPPoA and PPPoE 
encapsulation)
 The schedule rule(s) in SMT menu 26 have priority over your 
Connection settings.
Nailed-Up Connection 
(Appears when you use 
PPPoA and PPPoE 
encapsulation)
Select Nailed-Up Connection when you want your connection up all the 
time. The device will try to bring up the connection automatically if it is 
disconnected.
Connect on Demand 
(Appears when you use 
PPPoA and PPPoE 
encapsulation)
Select Connect on Demand when you don't want the connection up all 
the time and specify an idle time-out in the Max Idle Timeout field.
Table 27   Device Operation > Device Configuration > Network > WAN > Setup (Prestige) 
LABEL
DESCRIPTION