Specifications
Chapter 16 – Audio Commands
Multi-Tech Systems, Inc. AT Commands for EDGE (E1) Modems (S000474A) 263
16.8 AT^SAIC Audio Interface Configuration
Description: AT^SAIC configures the interface connections of the active audio mode. The write command is
usable in audio modes 2 to 6 only.
If AT^SNFS=1, any attempt to use the AT^SAIC write command is rejected with and returns an
error response. This is because all default parameters in audio mode 1 are determined for type
approval and are not adjustable.
To allocate a specific audio mode to one of the audio interfaces, first select the audio mode with
AT^SNFS and then choose the interface using AT^SAIC.
Important Note: Only Audio Interface 1 is supported
Syntax: Test Command: AT^SAIC=?
Response: ^SAIC:(list of supported <io>s), (list of supported<mic>s), (list of
supported<ep>s), (list of supported<clock>s), (list of supported<mode>s), (list
of supported<frame_mode>s)
OK
Read Command: AT^SAIC?
Response: ^SAIC: <io>, <mic>, <ep>, <clock>, <mode>, <frame_mode>
OK
ERROR
+CME ERROR: <err>
Write Command: AT^SAIC=<io>[, <mic>[, <ep>][, <clock>, <mode>, <frame_mode>]]
Response: OK
ERROR
+CME ERROR: <err>
Parameters:
<io> Input and output selection
1 Digital input and output
2 Analog input and output
<mic> Microphone selection
1 Microphone 1
<ep> Select differential earpiece amplifier
1 Selects the earpiece amplifier 1
<clock> Parameter is mandatory if <io>=1 (digital).
0 256kHz clock
1 512kHz clock
<mode> Parameter is mandatory if <io>=1 (digital).
0 Master mode
1 Slave mode
<frame_mode> Parameter is mandatory if <io>=1 (digital).
0 Short frame
1 Long frame
Notes:
• The factory defaults of AT^SAIC vary with the selected audio mode.
If AT^SNFS=1 or 4 or 5, then AT^SAIC=2,1,1,0,0,0.
If AT^SNFS=2 or 3 or 6, then AT^SAIC=2,2,2,0,0,0.
AT^SNFD can be used to reset the factory defaults.
• For use after restart of the ME, you are advised to store the settings of AT^SAIC and AT^SNFS to the audio
profile saved with AT^SNFW. Otherwise, audio mode 1 (AT^SNFS=1) and audio interface 2
(AT^SAIC=2,1,1,0,0,0) will be active each time the ME is powered up.