Cradlepoint CBR450 - Manual (Page 21)

CRADLEPOINT
CBR450| USER MANUAL Firmware ver. 3.3.0
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6) If you are using a 4G WiMAX modem, you will want
to establish the Realm for your carrier. This setting
ensures that the modem, when attached to the
router, will properly connect to your carrier‘s wireless
broadband service. The CBR450 will default to the
Sprint Realm. Select your carrier from the dropdown
menu (options shown below).

Clear - clearwire-wmx.net

Rover - rover-wmx.net

Sprint 3G/4G - sprintpcs.com

Xohm - xohm.com

BridgeMAXX - bridgeMAXX.com

Time Warner Cable - mobile.rr.com

Comcast - mob.comcast.net
NOTE: If you use a 3G or LTE modem you can safely skip this step.
Click NEXT.