ZyXEL Communications P-660 series Guía de usuario descargar pdf (Pagina 48)

Chapter 4 WAN Setup

P-660R-F1 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.

4.3.1.3 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.

4.4 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 disable when

• the ZyXEL Device is in bridge mode

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

4.5 Internet Access Setup Screen

Use this screen to change your ZyXEL Device’s WAN settings. Click Network > WAN > Internet

Access Setup. The screen differs by the WAN type and encapsulation you select.

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ZyXEL Communications P-660 series Guía de usuario Pagina 48