NET (Network Connection)

The AT@NET command is used to configure the network connection method between the terminal and the backend server.

Example:
AT@NET=gl601###,,0,0,,,,,012F$
+ACK:NET,123456789012345,C031,10,0,,012F,20210407101530,1234$
AT@NET?gl601###,,0C37$
+QRY:NET,123456789012345,C031,10,0,1,1,,0,0,,,,,0C37,20210407101530,1234$

Parts

Fields

Length (Byte)

Range/Format

Default

Head

Header

3

AT@

AT@

Command Word

3

NET

NET

Leading Symbol

1

=

=

Password

8-16

gl601###

Body

Reserved

0

RAT Selection

1 or N

One or more RATs

0

LTE RAT

1 or N

One or more LTE RATs

0

Reserved

0

Reserved

0

Reserved

0

Reserved

0

Tail

Sequence Number

4

0000-FFFF (‘0’-‘9’, ‘A’-‘F’)

Tail

1

$

$

  • RAT Selection

    This field is used to specify the RAT (Radio Access Technology) allowed to be searched.

    Use numbers to indicate the corresponding RATs. In particular, setting this field to 0 indicates that the terminal will automatically search for all supported RATs.

    The numbers correspond to the RATs as follows:

    ID Number

    RAT

    2

    GSM

    3

    UMTS

    4

    LTE

    If multiple RATs are configured, the RATs are separated by vertical bars ‘|’, and their order also determines the search order.

    For example, “4|2” means that the terminal will search LTE first, and then GSM.

    For example, “4|3” means that the terminal will search LTE first, and then UMTS.

    For example, “3|2” means that the terminal will search UMTS first, and then GSM.

    For example, “4|3|2” means that the terminal will search LTE first, and then UMTS, and then GSM.

    GL601 supports the following options:

    • 0 - Auto

    • 2 - GSM only

    • 3 - UMTS only

    • 4 - LTE only

    • 4|3 - LTE|UMTS

    • 4|2 - LTE|GSM

    • 3|4 - UMTS|LTE

    • 3|2 - UMTS|GSM

    • 2|4 - GSM|LTE

    • 2|3 - GSM|UMTS

    • 4|3|2 - LTE|UMTS|GSM

    • 4|2|3 - LTE|GSM|UMTS

    • 3|4|2 - UMTS|LTE|GSM

    • 3|2|4 - UMTS|GSM|LTE

    • 2|4|3 - GSM|LTE|UMTS

    • 2|3|4 - GSM|UMTS|LTE

    Note

    There are two device models for the GL601: GL601MG and GL601CEU. The GL601CEU supports all of the above options, while the GL601MG only supports options 0, 2, 4, 4|2, 2|4.

  • LTE RAT

    This field is used to specify which network category to be searched under LTE RAT. It is only valid when LTE is included in the RAT specified by ‘RAT Selection’.

    Use numbers to indicate the corresponding LTE RATs. In particular, setting this field to 0 indicates that the terminal will automatically search for all supported network categories under LTE RAT. And the definition is as follows:

    ID Number

    LTE RAT

    1

    LTE Cat-M1

    3

    LTE Cat-NB2

    If multiple network categories for LTE RAT are configured, they are separated by vertical bars ‘|’, and their order also determines the search order.

    For example, “1|3” means that the terminal will search LTE Cat-M1 first, then LTE Cat-NB2.

    For example, “3|1” means that the terminal will search LTE Cat-NB2 first, then LTE Cat-M1.

    GL601 supports the following options:

    • 0 - Auto

    • 1 - LTE Cat-M1

    • 3 - LTE Cat-NB2

    • 1|3 - LTE Cat-M1|Cat-NB2

    • 3|1 - LTE Cat-NB2|Cat-M1

    Note

    There are two device models for the GL601: GL601MG and GL601CEU. The parameter ‘LTE RAT’ is only valid for the GL601MG and is a Reserved field for the GL601CEU.