P-2602H(W)(L)-DxA Series User’s Guide

The VBR-nRT (non real-time Variable Bit Rate) type is used with bursty connections that do not require closely controlled delay and delay variation. It is commonly used for "bursty" traffic typical on LANs. PCR and MBS define the burst levels, SCR defines the minimum level. An example of an VBR-nRT connection would be non-time sensitive data file transfers.

7.3.1.3 Unspecified Bit Rate (UBR)

The Unspecified Bit Rate (UBR) ATM traffic class is for bursty data transfers. However, UBR doesn't guarantee any bandwidth and only delivers traffic when the network has spare bandwidth. An example application is background file transfer.

7.4 Zero Configuration Internet Access

Once you turn on and connect the ZyXEL Device to a telephone jack, it automatically detects the Internet connection settings (such as the VCI/VPI numbers and the encapsulation method) from the ISP and makes the necessary configuration changes. In cases where additional account information (such as an Internet account user name and password) is required or the ZyXEL Device cannot connect to the ISP, you will be redirected to web screen(s) for information input or troubleshooting.

Zero configuration for Internet access is disabled when

the ZyXEL Device is in bridge mode

you set the ZyXEL Device to use a static (fixed) WAN IP address.

7.5Internet Access Setup

To change your ZyXEL Device’s WAN remote node settings, click Network > WAN > Internet Access Setup. The screen differs by the encapsulation.

See Section 7.1 on page 93 for more information.

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Chapter 7 WAN Setup

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ZyXEL Communications P-2602 manual Zero Configuration Internet Access, Internet Access Setup, Unspecified Bit Rate UBR