Multi-Tech QuickCarrier USB-D MTD-H5, Руководство пользователя, Страница: 20 / 31

BASIC OPERATIONS
7 More than 12.8%
99 Not known or not detectable
Note: Signal strength of 10 or higher is needed for successful packet data sessions.
Example
A example response to AT+CSQ:
+CSQ: 15,1
Checking Network Registration
Before establishing a packet data connection, verify the is device registered on the network. To do this enter the
network registration report read command:
AT+CREG?
If the device returns:
+CREG: 0,1
The device is registered.
If the device returns:
+CREG: 0,2
The device is in a network searching state.
Verify that Device Detects a Valid SIM Card
If your device uses a SIM card, use the query SIM status command to verify if the device detects the SIM card. To
do this, enter:
AT#QSS?
If the device detects that SIM card, it responds with one of the following:
Response Description
#QSS: 2, 1 SIM inserted
#QSS: 2, 2 SIM inserted and PIN unlocked.
#QSS: 2, 3 SIM inserted and ready.
If your device does not reply with one of those responses, verify that the SIM card is properly inserted.
Reading, Writing, and Deleting Messages
Reading Text Messages
To read a text message in text mode:
20 QuickCarrier
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USB-D MTD-H5 User Guide