Notes, User defined tone save #udtsav command, Syntax – Synaccess Networks NP-0801DTM User Manual
Page 312: Examples, User defined tone reset #udtrst command

AUDIO COMMANDS
HSPA+ AT Commands Reference Guide
312
Notes
Ai = 100 is equal to the maximum value of the single tone. Lower values attenuate output to the difference
between 100 and the selected amplitude (ex: Ai = 80 is equal to 100‐80 = ‐20dB).
Issuing AT&F1 or AT&Z has the effect to set the parameters with the last saved in non‐volatile memory values
Ai = 0 and Fi = 0 are only values for uninitialized parameters and cannot be issued by AT command. Every time
the set command is issued, the unspecified parameters are automatically reset to zero.
(Ai,Fi) issuing needs also (Aj,Fj) with j User Defined Tone SAVE #UDTSAV command Execute command saves the actual values of frequency and amplitude that are set with #UDTSET. Test command returns the OK result code. Syntax Command Command type AT#UDTSAV Execute AT#UDTSAV=? Test Examples Current tones are saved in non‐volatile memory. AT#UDTSAV OK User Defined Tone Reset #UDTRST command Execute command resets to default values for frequency and amplitude, which you can set by using #UDTSET. Test command returns the OK result code. Syntax Command Command type AT#UDTRST Execute AT#UDTRST =? Test Examples The default value tones are restored in non‐volatile memory. AT#UDRST OK