15
select
Quectel USB Modem
,
and then
right-click and select
Properties
.
Click on the
Modem
tab, and then the COM port is displayed on this tab.
Raspberry Pi/Linux Users: Assuming you have no other modems
installed, then the modem will be on ttyUSB3.
Now that your terminal is configured, we will walk through some
troubleshooting steps.
Step 1:
Confirm that the modem has a SIM correctly installed and that
the modem can talk to the SIM. In your terminal window, first enter the
command
ATE1
to enable command echo so you can see what you are
typing. Next, enter the command
AT+CIMI
and press
Enter
. The modem
should return a 15-digit number. If it returns a 15-digit number, continue
to
Step 2
below. Otherwise, confirm that you have a known, working SIM
card installed. If you are sure the SIM card is good, it’s possible the
problem is with the modem. See
If you Need Help
below to contact
Zoom support.
Summary of Contents for 4650
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