Routing incoming SMS text directly to the RS232 of the M114 without involving the SIM

In some scenarios, a device may be unable to send AT+CMGL="ALL" or AT+CMGR=<SMS position#> commands to list all incoming SMS messages or a specific one.
Therefore, the configuration provided below routes incoming SMS texts directly to the RS232 of the modem, enabling the device connected to the RS232 to read them seamlessly.

1. Insert a working SIM card in the M114.
2. Configure the Modem with the following AT commands:
   AT+CMGF=1
   AT+CSMP=17,167,0,0
AT+CSMS=1
AT+CNMI=2,2,0,0,1
   AT&W0
   
   Below is an example of SMS text routed directly to the RS232.
   +CMT: "+4917618xxxxxx",,"25/04/23,11:01:19+08" 
This is a test
   
   Note: M113 does not support this function.