3 5.18.3 defined values, 52 ringer sound level +crsl, 1 description – Rainbow Electronics 900 User Manual
Page 228: 2 syntax, 3 defined values, Ringer sound level +crsl

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18.51.3 5.18.3 Defined values :
0 Incoming voice call
1 Incoming data call
2 Incoming fax call
0 Min volume
…
6 Default volume
15 Max volume
0 Manufacturer Defined (default)
0 Stop Melody Playback
1-10 Melody ID for voice/data/fax call type (default : 1)
18.52 Ringer Sound Level +CRSL
18.52.1 Description :
This command is used to set/get the sound level of the ringer on incoming
calls. The set command changes the default
command.
18.52.2 Syntax :
Command syntax : AT+CRSL=
Command
Possible responses
AT+CRSL=0
Note : Set volume to Min.
OK
Note : Current ring playing with Min.
volume.
AT+CRSL=15
Note : Set volume to Max.
OK
Note : Current ring playing with Max.
volume.
AT+CRSL=?
Note : supported parameters
+CRSL: (0-15)
OK
18.52.3 Defined values :
0 Min volume
6 Default volume (default)
15 Max volume