Obtaining And Activating A Wireless Account; Important Note About Service Provider Fees; Direct Communication To The Cellular Modem; Using At Commands To Check Network Registration And Roaming Status - Multitech MultiModem SF 100-G User Manual

Obtaining and Activating a Wireless Account

Before you can use the cellular feature, you must obtain a GSM wireless account with an activated SIM card
capable of sending SMS text messages through your service provider. Then activate the account by installing
the SIM into the MultiModem iSMS. Please see the wireless account Activation Notice located on the
MultiModem iSMS CD; follow the directions to complete the activation of your account.

Important Note About Service Provider Fees

Your service provider will charge you for your data usage. Please check with your provider to make sure
you are aware of the charges.
Your MultiModem iSMS can be used to send a large number of SMS messages very quickly, and, as such,
you should have a contract/plan that accounts for the numbers of messages you are likely to send. Multi-
Tech is not responsible for any charges relating to your cellular bill.

Direct Communication to the Cellular Modem

You may want to communicate directly to the cellular modem to activate the modem, verify network
registration, and/or troubleshooting your connection. To do this:
Open a PC's command window by clicking the Start button and selecting Run.
1.
Type CMD to open the command window. Click OK.
2.
When the command window opens, type IPCONFIG.
3.
Type Telnet 192.168.2.1 5000 (Note: 5000 is the port number).
4.
See the GPRS AT Commands Reference Guide.
Using AT Commands to Check Network Registration and
Roaming Status
Use this command to verify that the cellular modem has been registered on a wireless network.
1. In the command window, type AT+CREG?
2. The modem will respond in one of the following ways:
Value
+CREG: 0,0
+CREG: 0,1
+CREG: 0,5
Note: If the modem indicates that it is not registered, verify the signal strength to determine if the
problem is the strength of the received signal.
Multi-Tech Systems, Inc.
Network Registration Verification
Network Registration Status
The modem is not registered on any network
The modem is registered on the home network
The modem is registered on a network and it is roaming
MultiModem® iSMS User Guide for Administrators
Chapter 2 – Getting Started
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