Service Guide

LTE Standard Module Series
EG915U_Series_Hardware_Design 54 / 91
Table 22: Behaviors of the MAIN_RI
The MAIN_RI behavior can be changed via AT+QCFG="urc/ri/ring"*. Please refer to document [2] for
details.
4.11. Control Signal
Table 23: Pin Definition of Control Signal
The module provides a W_DISABLE# pin to enable or disable airplane mode through hardware operation.
W_DISABLE# is pulled up by default, and driving it low will set the module to airplane mode. Its control
function for airplane mode is disabled by default and AT+QCFG= “airplanecontrol”, 1 can be used to
enable the function.
AT+CFUN=<fun> command provides the choice of the functionality level through setting <fun> into 0, 1
or 4.
⚫ AT+CFUN=0: Minimum functionality mode (RF functions are disabled).
⚫ AT+CFUN=1: Full functionality mode (by default).
⚫ AT+CFUN=4: RF function is disabled (Airplane mode).
State
Response
Idle
MAIN_RI keeps at high level.
URC
MAIN_RI outputs 120 ms low pulse when a new URC
return.
Pin Name
Pin No.
I/O
Description
Comment
W_DISABLE#
18
DI
Airplane
mode control
1.8 V power domain.
Pulled up by default. When it is in low voltage
level, the module can enter airplane mode.
If unused, keep this pin open.