AT Commands User Manual may be: − 0 normal mode. − 1 silent mode. may be a value in range 0-5 (0 means mute). may be a value in range 1-100 (1 means minimum); the default value is 50. Note: the have the range 1-7 if the define AUD_MASTER_VOLUME_CONCEPT does not exist, in order to support also the old volume concept. The default value is 3. may be: − 0 mute off. − 1 mute on. 18 5.13 Alert sound mode +CALM Command syntax Description AT+CALM= This command is used to select the general alert sound mode of the ME. Read command AT+CALM? +CALM: OK Test command AT+CALM=? +CALM:
(0-1) OK 5.14 Ringer sound level +CRSL Command syntax Description AT+CRSL= This command is used to select the incoming ringer sound level of the ME. Read command AT+CRSL? +CRSL: OK Test command AT+CRSL=? +CRSL: (0-1) OK 5.15 Loudspeaker volume level +CLVL Command syntax Description AT+CLVL= This command is used to select the volume of the internal loudspeaker of the ME. Read command AT+CLVL? +CLVL: OK Test command AT+CLVL=? +CLVL: (1-100) see also the note below. OK 5.16 Mute control +CMUT Command syntax Description AT+CMUT= This command is used to enable and disable the uplink voice muting during a voice call. Read command AT+CMUT? +CMUT= OK Test command AT+CMUT=? +CMUT: (0-1) OK