ZyXEL Communications VMG8825-B Series, Руководство пользователя, Страница: 86 / 360

Chapter 6 Broadband
VMG8825-B Series User’s Guide
86
The following table describes the labels on this screen.
Table 13 Network Setting > Broadband > Cellular Backup
LABEL DESCRIPTION
General
Cellular Backup Select Enable to have the VMG use the cellular connection as your WAN or a backup when the
wired WAN connection fails.
Ping Check Select Enable if you want the VMG to ping check the connection status of your WAN. You can
configure the frequency of the ping check and number of consecutive failures before triggering
cellular backup.
Check Cycle Enter the frequency of the ping check in this field.
Consecutive Fail Enter how many consecutive failures are required before cellular backup is triggered.
Ping Default
Gateway Select this to have the VMG ping the WAN interface’s default gateway IP address.
Ping the Host Select this to have the VMG ping the particular host name or IP address you typed in this field.
Cellular Connection Settings
Card
description This field displays the manufacturer and model name of your cellular card if you inserted one in
the VMG. Otherwise, it displays
N/A .
Username Type the user name (of up to 64 ASCII printable characters) given to you by your service
provider.
Password Type the password (of up to 64 ASCII printable characters) associated with the user name
above.
PIN A PIN (Personal Identification Number) code is a key to a cellular card. Without the PIN code,
you cannot use the cellular card.
If your ISP enabled PIN code authentication, enter the 4-digit PIN code (0000 for example)
provided by your ISP. If you enter the PIN code incorrectly, the cellular card may be blocked by
your ISP and you cannot use the account to access the Internet.
If your ISP disabled PIN code authentication, leave this field blank.
Dial string Enter the phone number (dial string) used to dial up a connection to your service provider’s base
station. Your ISP should provide the phone number.
For example, *99# is the dial string to establish a GPRS or cellular connection in Taiwan.
APN Enter the APN (Access Point Name) provided by your service provider. Connections with
different APNs may provide different services (such as Internet access or MMS (Multi-Media
Messaging Service)) and charge method.
You can enter up to 32 ASCII printable characters. Spaces are allowed.
Connection Select Nailed UP if you do not want the connection to time out.
Select on Demand if you do not want the connection up all the time and specify an idle time-
out in the Max Idle Timeout field.
Max Idle
Timeout
This value specifies the time in minutes that elapses before the VMG automatically disconnects
from the ISP.
Obtain an IP
Address
Automatically Select this option if your ISP did not assign you a fixed IP address.
Use the
following static
IP address Select this option if the ISP assigned a fixed IP address.
IP Address Enter your WAN IP address in this field if you selected Use the following static IP address .
Subnet Mask Enter the subnet mask of the IP address.
Obtain DNS info
dynamically Select this to have the VMG get the DNS server addresses from the ISP automatically.