Chapter 5 Basic Router Configuration
Configuring WAN Interfaces
Prerequisites for Configuring the 3G Wireless Interface
The following are prerequisites to configuring the 3G wireless interface:
•You must have wireless service from a carrier, and you must have network coverage where your router will be physically placed. For a complete list of supported carriers, see the data sheet at:
www.cisco.com/go/m2m
•You must subscribe to a service plan with a wireless service provider and obtain a SIM card (GSM modem only) from the service provider.
•You must check your LEDs for signal strength, as described in Table
•You should be familiar with the Cisco IOS software. See Cisco IOS documentation beginning with Cisco IOS Release 12.4(15)XZ or later for Cisco 3G Wireless support.
•To configure your GSM data profile, you need the following information from your service provider:
–Username
–Password
–Access point name (APN)
•To configure your CDMA (CDMA only) data profile for manual activation, you need the following information from your service provider:
–Master Subsidy Lock (MSL) number
–Mobile Directory number (MDN)
–Mobile Station Identifier (MSID)
–Electronic Serial Number (ESN)
•Check the LED located on the front panel of the router for signal strength and other indications. Table
Restrictions for Configuring the Cellular Wireless Interface
The following restrictions apply to configuring the Cisco 3G wireless interface:
•A data connection can be originated only by the 3G wireless interface. Remote
•Because of the shared nature of wireless communications, the experienced throughput varies depending on the number of active users or the amount of congestion in a given network.
•Cellular networks have higher latency than wired networks. Latency rates depend on the technology and carrier. Latency may be higher when there is network congestion.
•VoIP is currently not supported.
•Any restrictions that are part of the terms of service from your carrier also apply to the Cisco 3G wireless interface.
•Inserting a different type of modem from what was previously removed requires configuration changes and you must reload the system.
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