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4.
Other Settings
Configuration Item
AT Command
Description
APN
AT+APN=xx
xx
：
APN value
Example: AT+APN=nbiot
APN Username
AT+USERNAME=xx
xx
：
APN username value
Example: AT+USERNAME=test1
APN Password
AT+USERPASSWORD=xx
xx
：
APN password value
Example:
AT+USERPASSWORD=testpwd
Call center
AT+CALLNO=xx
Set the APN call center
xx
：
call center value
Example: AT+CALLNO=
Heartbeat Interval
AT+HRTSEC=x
x
：
0-65535 second, 0=disable
heartbeat
Example: AT+HRTSEC=40
Reconnect Time
AT+RECONSEC=x
x
：
0-65535 second
Example: AT+RECONSEC=10
TCP Keepalive
AT+KPLVMIN=x
x
：
keepalive interval
Example: AT+KPLVMIN=12
Network Selection
AT+NETMODE=x
X: 0 auto
1:GSM only
2:TD-SCDMA only
3:WCDMA only
4.
CDMA only
5.
HDR only
6.
LTE only
Example: AT+NETMODE=0
FTCP Transfer Meaning
AT+CONVERT=x
x : 0=No, 1=Yes,
Example: AT+CONVERT=0
Custom Login Data
AT+SELFLGN=x
X: register data
Example: AT+SELFLGN=hello
Custom heartbeat Data
AT+SELFHRT=x
Set the heartbeat data
X: heartbeat data value
Example: AT+SELFHRT=hello
Custom Login data type
AT+SELFLGNHEX=x
Set the custom register data
type
x : 0=string,1=hex
Example: AT+SELFLGNHEX=0
Custom heartbeat data
AT+SELFHRTHEX=x
Set the custom heartbeat data
type
