Cradlepoint CTR350 User Manual page 14

If you are using your cell phone or USB cellular modem.
If you are using Cable/DSL or other Ethernet LAN
connection over Ethernet to connect to the Internet.
Use the pull down menu to select your cellular plan.
Select if your network requires a password.
This information can be obtained by contacting your ISP
(Internet Service Provider). If you are using your cellular
phone, your ISP is your cellular operator such as Verizon,
Sprint, T-Mobile, etc.
13