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Troubleshooting guide
Q. The unit will not power up. No LEDs on.
A. Check power supply voltage at intercom is within 14.8V DC. Cable length from PSU to
intercom should be less than 25 feet and in 14 gauge. Check the fuse.
Q. The unit powers up but is not showing network reception or will not respond to SMS.
A. This means the unit is not able to detect the network for some reason.
-Power off the unit, remove the SIM and check it in a mobile phone to verify it can make a call
and has calling credit.
-Disable any PIN code request if active on the SIM card.
-Check the SIM is a standard voice capable SIM. If you are unsure, contact your SIM card
provider to verify. Compatible networks are At&T and T-Mobile.
-Check the reception is medium or good. Poor reception is not sufficient.
-Power off, remove the SIM, use fine sand paper to lightly sand the SIM pads and contacts on the
GSM unit, lightly bend the contacts upwards so that they make better contact with the SIM and
try again.
Q. The unit calls the first number, but there is not enough time to answer before it diverts to the
next number.
A. Increase the no answer time as per programming instructions.
Q. The unit calls the first number but voicemail comes on before it can ring the second number.
A. Decrease the no answer time as per programming instructions.
Q. The caller ID part does not work.
A. Be sure to program the caller ID part under 72 feature. If your number is a private or number
withheld, then it will not work.
-Even if you have already programmed a number to receive a call from the intercom, if you also
want that number to have caller ID access, it must be programmed under the 72 feature also.
-Ensure the number is entered as you would normally dial it from another phone.
-For US customers, ensure the numbers have been entered with a leading 1. If this does not work,
try again without the leading 1.
Q. There is no audio from the gate, but the person at the gate can hear ok.
A. This can be due to low reception or excessively long power cables.
-Check reception level by *20#.
-Change SIM card if necessary to another network which may have better coverage.
-Purchase a high gain antenna.
This may also be caused by a defective microphone, water on a microphone from a sprinkler for
example, or dirt/insects blocking the microphone hole. If reception is optimum and the problem
persists, contact your supplier or installer.
Q. The audio quality that can be heard on the remote telephone is poor or humming (buzzing).
A. A small amount of GSM buzz can be considered normal on GSM intercoms, but not so much
that causes inability to hear the person speaking. This is a symptom of poor reception. Try above
steps on checking and improving reception. Consider fitting an external high gain antenna.
