Multi-Tech Systems MTCBA-G-UF1 - Manual (Page 29)

Chapter 2 – Installation
Multi-Tech Systems, Inc. MultiModem® GPRS with USB User Guide 29
Connecting the Optional Handset
If you intend to use a phone handset, connect it to the MultiModem now.
Modular Handset
Cable
(use of handset optional;
handset cable not included)
Mobile Phonetools
For initial configuration of your wireless device, Multi-Tech offers a Windows
® based mobile Phone
Tools application.
To load mobile Phone Tools, click on the mobile Phone Tools icon on your product CD and follow
the on-screen prompts.
Verifying Signal Strength
The Wireless MultiModem establishes a call if the signal is sufficiently strong. To verify the signal
strength, do the following:
1. Using the HyperTerminal program at the computer to which the Wireless MultiModem is
connected, type the AT command AT+CSQ. A value for the received signal strength will be
returned.
2. Verify the result with the following chart:
Signal Strength Verification
Value of signal strength
(AT+CSQ response) (RSSI) Signal strength
10 - 31 Sufficient
0 - 9 Weak or Insufficient
99 Insufficient
Verifying Network Registration
In this procedure, you will verify that the Wireless MultiModem has been registered on the wireless
network. To do so, you will use the common communications program Hyperterminal.
1. Using the Hyperterminal program at the computer to which the Wireless MultiModem is
connected, type the AT command AT+CREG?. A value for the modem’s network registration
status will be returned.
2. Verify the result with the following chart:
Network Registration Verification
Value Network Registration Status
0, 1 Yes
0, 5 Yes
(registered roaming)
Note: If the modem is not registered, perform the procedure for verifying signal strength to determine the
strength of the received signal.