Replace SIM card
Use a mini SIM card, 15 x 25 mm.
Proceed as follows to replace the SIM card:
1. Release the slide for the SIM card at the rear of the MODEM MD720 by gently pressing
the release button.
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Figure 4-70
MODEM MD720, rear side
2. Withdraw the slide from the housing and remove the SIM card.
3. Insert the new SIM card into the slide.
4. Move the slide into the housing until it gently latches into place.
5. Mount the MODEM MD720 on the mounting rail.
Note
Replacing the SIM card and PIN
When changing the SIM card, do not forget to change the PIN in your control.
If you are using a lot of SIM cards, it may make sense to set all SIM cards, e.g. with one cellular
phone to the same PIN.
The device also operates with SIM cards, where the PIN prompt is deactivated. In this case,
when establishing a connection, the prompt to enter a PIN is skipped.
4.20.3
This is how you load the factory settings
Restoring the factory settings
If you press the SET key for longer than 4 seconds until the LED "CONNECT" lights up, then
the MODEM MD720 configuration is reset to the default values set in the factory.
Service cases - hardware
4.20 MODEM MD720
Software and hardware
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