
Chapter 2 – AT Commands
Multi-Tech Systems, Inc. SocketWireless Bluetooth AT Commands (S000360H) 44
Audio (SCO) PCM Interface Commands
On Voice Version Only
DSCO Dial SCO
This command tells the device to dial and connect the audio channel.
Format: ATDSCO
EXAMPLE:
TYPE: ATDSCO<cr>
REPLY: <cr_lf>OK<cr_lf>
<cr_lf>SCO CONNECT<cr_lf>
OR
<cr_lf>OK<cr_lf>
<cr_lf>SCO FAILED<cr_lf>
OR
<cr_lf>NO CARRIER<cr_lf>
DHSCO Dial Hang Up SCO
This command tells the device to disconnect the audio channel.
Format: ATDHSCO
EXAMPLE:
TYPE: ATDHSCO<cr>
REPLY: <cr_lf>OK<cr_lf>
<cr_lf>SCO DISCONNECT<cr_lf>
OR
<cr_lf>NO CARRIER<cr_lf>
Max Power Command
SPF Set Max TX Power Level
Format: ATSPF,<Power Level>,<Sign>
Parameters:
• Power Level: Integer from 0 to 10
• Sign: + or –
Combined value of level and sign must be in the range of -5 to +10.
Typical Bluetooth Industry Values Depending On Device Class Type:
Class 1 = 0dBm to +10dBm
Class 1 Power Table Values:
-5 dBm
0 dBm
5 dBm
0 dBm
Factory Default: 10dBm for Class 1.
EXAMPLE:
TYPE: ATSPF,5,+<cr> // +5dBm
REPLY: <cr_lf>OK<cr_lf>
OR
<cr_lf>ERROR<cr_lf>
Read Using: ATSI,14
Note: The default value does not include gains associated with the external antenna (2 dBm).
The firmware uses the highest value in the power table that is less than or equal to the
requested max transmit power number above.
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