DIGM Technology GSM-680 User Manual - Page 4

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GSM Fixed Wireless Terminal (Model: GSM-680)
6.

Troubleshooting

No.
Problem
Not
connected
1
GSM network.
No dialing tone is
2
heard after off-hook.
3
No caller ID.
Notes
▲
1. Working environment: Choose areas with good signal
2. Requirement for the power supply: The reliable and stable power supplies will guarantee the normal
working of GSM terminal.
3. Antenna: Keep the antenna far away from the telephone to reduce the communication disturbance.
Possible Causes
1.
SIM card not inserted
correctly.
to
2.
SIM card is dirty.
3.
Antenna
is
connected.
1. The phone cable is not
correctly connected.
1.
The service is not enabled.
2.
The
phone
support caller ID.
Possible Remedy
1.
Install the SIM card again.
2.
Clean the SIM card with a dry
cloth.
not
well
3.
Check the antenna connection.
4.
Adjust the antenna position.
1. Check the cable connection.
1.
Check the service is enabled on
the GSM network.
does
not
2.
Change for a phone supporting
caller ID.
4
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