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EHS6 AT Command Set
16.12 AT^SAFH
EHS6_ATC_V03.001 15/12/3
Confidential / Released
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16.12 AT^SAFH Audio File Handling
AT^SAFH allows playing voice prompts in AMR format. Implemented according to 3GPP TS 26.071 [41], the
voice prompt feature supports source codec bit rates 12.2 kbps. Noise insertion and variable frame types are not
supported.
• Playback: AMR file can be played from file flash system or RAM. AMR file can be only played locally.
• Recording: Speech spoken into the microphone can be captured into the module's RAM and afterwards
played as voice prompt or stored in module's flash file system. Voice prompt recording uses the highest
source codec bit rate of 12.2 kbps allowing a maximum of 30 minutes for a recorded voice prompt. Therefore,
recording finishes automatically after 30 minutes unless you stop recording with <audioFileCmd>=3.
The AT^SIND command provides the "voiceprompt" indicator to notify the user when playback or recording starts
and stops.
Syntax
Parameter Description
Audio file handling command
0 Start playback
1 Stop playback
2 Start recording (to internal RAM)
Test Command
AT^SAFH=?
Response(s)
^SAFH: (list of supported <audioFileCmd>s), (max length of <audioFilePath>)
OK
Read Command
AT^SAFH?
Response(s)
^SAFH: <audioHandlerStatus>
OK
ERROR
+CME ERROR: <err>
Write Command
To start and stop voice prompt playback from FFS or RAM, store voice prompt from RAM to FFS, or to start
and stop voice prompt recording in RAM:
AT^SAFH=<audioFileCmd>[, <audioFilePath>]
Response(s)
[^SAFH: <cmdResult>]
OK
ERROR
+CME ERROR: <err>
PIN Last Reference(s)
- + - 3GPP TS 26.071 [43]
<audioFileCmd>
(num)
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