ZyXEL Communications P-793H User Manual

Chapter 25 Internet Access Setup

P-793H User’s Guide

VCI

The valid range for the VCI is 32 to 65535 (0 to 31 is reserved for local management 

of ATM traffic). Enter the VCI assigned to you.

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.

Peak Cell Rate 

(PCR)

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 (SCR)

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 (MBS)

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. 

My Login 

(PPPoE and PPPoA only) Enter the login name given to you by your ISP.

My Password

(PPPoE and PPPoA only) Type your password again for confirmation.

ENET ENCAP 

Gateway

(ENET ENCAP only) Enter the gateway IP address provided by your ISP.

Idle Timeout 

(sec)

(PPPoE and PPPoA only) Specify an idle time-out. The default setting is 0, which 

means the Internet session will not timeout.

IP Address 

Assignment

If your ISP did not assign you a fixed IP address, press [SPACE BAR] and then 

[ENTER] to select Dynamic, otherwise select Static and enter the IP address and 

subnet mask in the following fields.

IP Address

This field is enabled if the IP Address Assignment is Static. Enter the (fixed) IP 

address assigned to you by your ISP (static IP address assignment is selected in the 

previous field).

Network 

Address 

Translation

Network Address Translation (NAT) allows the translation of an Internet protocol 

address used within one network (for example a private IP address used in a local 

network) to a different IP address known within another network (for example a 

public IP address used on the Internet). 
Choose None to disable NAT.
Choose SUA Only if you have a single public IP address. SUA (Single User 

Account) is a subset of NAT that supports two types of mapping: Many-to-One and 

Server. 
Choose Full Feature if you have multiple public IP addresses. Full Feature 

mapping types include: One-to-One, Many-to-One (SUA/PAT), Many-to-Many 

Overload, Many- One-to-One and Server. When you select Full Feature you must 

configure at least one address mapping set.
Please see

 for a more detailed discussion on the Network 

Address Translation feature. 

Address 

Mapping Set

This field is enabled if the Network Address Translation is Full Feature.
Enter the number of the address mapping set you want to use for your Internet 

connection.

When you have completed this menu, press [ENTER] at the prompt “Press ENTER to Confirm…” to 

save your configuration, or press [ESC] at any time to cancel.

Table 101   Menu 4: Internet Access Setup (continued)