Specifications

11.3. GSM Commander does not send any SMS messages.

Cause 1: Airtime problem

The airtime on your SIM card may be depleted, or the SIM card may have been de-activated

by the network. Refer to Section 5.3 (Installation: Sim Card)

Cause 2: Reception problem

You may have bad reception in your area, preventing the unit from connecting to the network.

Please check using a regular cellular phone that there shows 1-2 bars of signal right next to

the GSM Commander. Refer to Section 5.4 (Installation: Antenna)

Cause 3: Bad configuration

You may have configured the unit incorrectly. Please send a status request message to the

unit, and see if it responds (Section 5.15.1). If it does respond, the unit is operating correctly.

11.4. GSM Commander does not display the Airtime value

Cause 1: Incorrect operator selection

You may have chosen the incorrect operator settings under the “SETTINGS TAB” in the

software interface. If your operator is not in the list, then choose “Other” and define the airtime

checking and please call me numbers respectively (If available).

Cause 2: “Do Not Check Airtime” is enabled

You may have disabled airtime checking by ticking the box labeled “DO NOT Check Airtime”

which is located in “Supplementary Data Services” under the “SETTINGS TAB”.

Cause 3 : Reception problem

You may have bad reception in your area, preventing the unit from communicating with the

network. Please check using a regular cellular phone that there shows 1-2 bars of signal right

next to the GSM Commander. Refer to Section 5.4 (Installation: Antenna)

11.5. GSM Commander does not respond to Voice Calls

Cause 1: Caller ID on phone is disabled

Your Caller ID feature on your phone may be deactivated. Please refer to your phone's

manual on how to enable this feature.

Cause 2: Bad configuration

You may have configured the unit incorrectly. Make sure the number you are calling from is

stored in the “Numbers List” on the GSM Commander.

12. GUARANTEE

The GSM Commander is guaranteed for a period of 24 months against defects in materials or

workmanship. Should your product become defective during the guarantee period it will be

repaired or replaced at the sole discretion of Polygon Technologies under the following

conditions:

A: The unit must not have been opened or otherwise tampered with. If the enclosure of any

unit has been opened at all, the guarantee will be null and void.

B: The guarantee does not cover damage resulting from excessive input voltages, lightning,

power surges or water ingress.