Specifications

Chapter 2 – Getting Started
MultiModem® iSMS Administrator’s Guide 22
Obtaining and Activating a Wireless Account
Before you can use the cellular feature:
● Obtain a GSM wireless account with an activated SIM card capable of sending SMS text messages through your
service provider.
● Install the SIM into the MultiModem iSMS.
● Activate your account. For further information, find the wireless activation notice on the Multi-Tech website. Follow
the directions on the website to complete the activation of your account.
Service Provider Fees
Your service provider charges you for data usage. Your provider can tell you what these fees are.
You can use your MultiModem iSMS to send a large number of SMS messages very quickly. As such, have a contract 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.
Directly Communicating with the Cellular Modem
You may want to communicate directly to the cellular modem to verify network registration, and to troubleshoot your
connection. To do this, open a Telnet connection to the MultiModem iSMS, specifying port 5000.
This provides AT command line access to the first GPRS modem in the MultiModem iSMS.
To determine cellular connection status, use the AT commands. For more information about these commands, see the
GPRS AT Commands Reference Guide.
Note: If your SIM card is locked, you cannot send SMS messages.