Top Global USA. ----MB7900 User Guide
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3.4.2.2.3
WAN#3: backup access
Figure3- 38
Backup access
MB7900 supports v.90 modem for the WAN backup link. When the WWAN is unavailable
or is down, the backup link will automatically dials up.
ISP Dial Number
: The dialing number to dial up to the ISP’s network. You may contact
your ISP for that.
Username
: The username for authentication during the PPP negotiation period.
Password
: The password for authentication during the PPP negotiation period.
Note:
The backup link requires a special cable to connect MB7900 and the V.90
modem. You may contact the retails or Top Global sales to obtain that.
3.4.2.2.4
Fail-over (using WAN#0, WAN#1 and WAN#2)
Figure3- 39
Interfaces
If WAN mode is set to “Fail Over” ,there will be one of the interfaces (WAN#0 or WAN#1 or