ZyXEL Communications USG-300 - V2.20 ED 2, Руководство пользователя

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Chapter 13 Interfaces
ZyWALL USG 300 User’s Guide
324
Get
Automatically
Select this option If your ISP did not assign you a fixed IP address.
This is the default selection.
Use Fixed IP
Address
Select this option If the ISP assigned a fixed IP address.
IP Address Enter the cellular interface’s WAN IP address in this field if you
selected
Use Fixed IP Address .
Metric Enter the priority of the gateway (if any) on this interface. The
ZyWALL decides which gateway to use based on this priority. The
lower the number, the higher the priority. If two or more gateways
have the same priority, the ZyWALL uses the one that was configured
first.
Device Settings
Device
Selection
Select the 3G card to use with this entry or select auto to have the
ZyWALL automatically detect the type of card.
Band Selection This field appears if you selected a 3G device that allows you to select
the type of network to use. Select the type of 3G service for your 3G
connection. If you are unsure what to select, check with your 3G
service provider to find the 3G service available to you in your region.
Select auto to have the card connect to an available network. Choose
this option if you do not know what networks are available.
You may want to manually specify the type of network to use if you
are charged differently for different types of network or you only have
one type of network available to you.
Select GPRS / EDGE (GSM) only to have this interface only use a
2.5G or 2.75G network (respectively). If you only have a GSM
network available to you, you may want to select this so the ZyWALL
does not spend time looking for a WCDMA network.
Select UMTS / HSDPA (WCDMA) only to have this interface only
use a 3G or 3.5G network (respectively). You may want to do this if
you want to make sure the interface does not use the GSM network.
Enable Budget
Control Select this to set a monthly limit for the user account of the installed
3G card. You can set a limit on the total traffic and/or call time. The
ZyWALL takes the actions you specified when a limit is exceeded
during the month.
Note: The ZyWALL automatically uses whichever service
provider’s 3G network to which it can connect. This could
result in higher fees or roaming charges if it uses other
service providers’ networks, especially if your 3G provider
has poor coverage in your area or you frequently move
your ZyWALL to different locations.
Time Budget Select this and specify the amount of time (in hours) that the 3G
connection can be used within one month. If you change the value
after you configure and enable budget control, the ZyWALL resets the
statistics.
Table 68 Configuration > Network > Interface > Cellular > Add (continued)
LABEL DESCRIPTION