AT Command Handhook-V1.0

Typical AT Command list

• AT\r\n

• Return: OK
  Description:AT test command, to check if you could enter AT mode.

• ATA\r\n

• Return: OK
  Description: answer the phone

• ATH\r\n

• Return: OK
  Description: Hang Up

• ATD15982373181;\r\n

• Return: OK
  Description: Make a call

• AT+CMGF=1\r\n

• Return: OK
  Description: Set SMS form as text mode, when you want to receive SMS via AT commands, you need to send 'AT+CMGF=1' firstly before sending 'AT+CMGR=1'.

• AT+CSCS="UCS2"\r\n

• Return: OK
  Description: Set SMS form as UCS2 encoding

• *AT+CMGS="00310038003600***0036003500340037"\r\n

• Return: >
  Description:The UCS2-BIG codes inside the quotATion marks is the target phone number to send SMS. when you get ">" characters, enter the message you want to send, content encoding is UCS2 encoding (Set before), then tick the HEX to send, and send "0x1a" expressed as CTRL+Z (0x1A) to send SMS.

• AT+CMGR=1\r\n

• Return: +CMTI：........
  Description: Read the message 1, the content "........" :Returned as text messages

• AT+CMGD=1\r\n

• Return: OK
  Description: Delete SMS of number 1 in memory.

• AT+CTTS=0\r\n

• Return: OK
  Description: Stop the current broadcast

• AT+DDET=1\r\n

• Return: OK
  Description: Enable the DTMF function

  NOTE: More AT command could be refered to AT command manual.Download AT command manual