ZyXEL Communications P870HNU-51B User Manual page 106

Chapter 5 WAN Setup
If the signal strength of a 3G network is too low, the 3G card may switch to an available 2.5G or
2.75G network. Refer to
3G wireless technologies.
Figure 31 3G Backup
The following table describes the labels in this screen.
Table 27 3G Backup
LABEL
Enable 3G Backup
Card Descriptioin
3G Status
User Name
Password
10
6
Section 5.7 on page 107
DESCRIPTION
Select this option to have the Device use the 3G connection as your WAN or a
backup when the wired WAN connection fails.
This field displays the manufacturer and model name of your 3G card if you
inserted one in the Device. Otherwise, it displays N/A.
This field displays:
• NoDevice when no 3G card is inserted,
• Disabled when the 3G WAN is not activated,
• Up when the 3G connection is up,
• Down when the 3G connection is down,
• NoResponse when there is no response from the inserted 3G card,
• InvalidPIN if the PIN code you entered in the WAN > 3G Backup screen
is not the right one for the 3G card you inserted,
• NeedPUK if you enter the PIN (Personal Identification Number) code
incorrectly for three times and the SIM card is blocked by your ISP,
• DialFail when the Device fails to dial up a 3G connection.
• or InvalidSIM when the SIM card is damaged or not inserted.
Type the user name (of up to 70 ASCII printable characters) given to you by
your service provider.
Type the password (of up to 70 ASCII printable characters) associated with the
user name above.
for a comparison between 2G, 2.5G, 2.75G and
P-870HNU-51b User's Guide