Neo_M660 AT Command SetCopyright © Neoway Technology Co., Ltd 20Parameter :0: disable1: enable(default value)ReturnValue+CLIP: ,:0: disable1: enable:0: CLIP not provisioned1: CLIP provisioned2: unknown (no connection, etc.)Example AT+CLIP=1OKAT+CLIP?+CLIP: 1, 1(default)OKRemarks N/A4.7 Sending DTMF Tone: +VTSDescription To send the DTMF toneOnly for voice services in GSMFormat AT+VTS=Parameter < DTMF >:A single ASCII character in the set .0-9, #, *, A-D.ReturnValueSee the Example.Example AT+VTS=?+VTS: 0,1,2,3,4,5,6,7,8,9,A,B,C,D,#,*OKRemarks N/A4.8 Auto-Answer: ATS0Description To control the auto-answer mode of the moduleFormat ATS0=