3G CDMA NIM/Cellular Interface
Example 3G CDMA NIM/Cellular Interface Configurations
61700801G1-29.1H
Copyright © 2010 ADTRAN, Inc.
36
3G CDMA NIM as a Secondary WAN Connection
The following network diagram and configuration example show the application of the 3G CDMA NIM as
a secondary WAN connection. In this example, a medium-sized business has decided to use a T1 NIM in
conjunction with the 3G CDMA NIM as backup in case the T1 connection ever goes down. The cellular
connection is chosen by this company because it is an affordable choice to make sure they can still connect
to the WAN if something happens to their primary connection. Once the 3G CDMA NIM is installed in the
second slot of the NetVanta 3305, the company sets up a secondary connection to the network. The
network diagram for this example is shown in Figure 6.
Figure 6. 3G CDMA NIM as Backup WAN Connection
Sample CLI Configuration
The following is a sample CLI configuration for the 3G CDMA NIM as a secondary WAN connection:
!
ip routing
ip firewall
!
probe PROBE_PPP icmp-echo
destination http://www.example.com port 80
no shutdown
!
Internet
NetVanta 3305
with T1 NIM and
3G CDMA NIM
Cellular
Connection
PPP running
over T1 line
192.168.1.1 /24
LAN
192.168.1.2 /24
192.168.1.3 /24
192.168.1.4 /24
192.168.1.5 /24
