Synaccess-networks NP-0801DTM Manuel d'utilisateur télécharger pdf (Page 323)

AUDIOCOMMANDS

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323 HSPA+ATCommandsReferenceGuide

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MiscellaneousAudioCommands

PCMPlayandRec eive#SPCM

Executecommandallowsusereithertosendspeechsamplecomingfrommicrophoneand/ ordownlinkaudio

channeltoserialport,ortoreproduceaPCMcomingfromserialporttospeakerand/oruplinkaudiochannel;

bothmodesarealsoavailableduringspeechcalls.

Testcommandreturnsthesupportedrangeofvaluesfor<mode>an

d<dir>.

#SPCM:<mode>,<dir>

Syntax

Command Commandtype

AT#SPCM=<mode>[,dir,[format]] Execute

AT#SPCM=? Test

ParametersandValues

<mode> Actiontoexecute.

1 ReproducePCMstreamfromserialtoselectedpath.

2 Sendspeechfromselectedpathtoserial.

<dir> Selecttheaudiopath.

0 Send/receiveto/fromanalogfrontend.

1 Send/receiveto/fromaudiochannel.

2 Reserved.

<format> PCMbitsformat.

0 8bit.

1 16bit.

Notes

 Executecommandswitchesmoduleinonlinemode.Modulemovesbacktocommandmodeeitheraferentering

theescapesequence+++orasaconsequenceofaDTRtransition.

 Ifyouareusing16bit,youmustset+IPRatleastto230400.

Thefollowingtablesummarizesthestatusofaudiopathduringaspeechcallfordifferentconfigurationsandwith

sidetonedisabled:

 mode=1 mode=2

dir=0 Uplinkoff.Downlinkon.

PCMstreamonspeaker.

Uplinkoff.Downlinkoff.

PCMstreamfrommicrophone.

dir=1 Uplinkon.Downlinkoff.

PCMstreamonuplink.

Uplinkoff.Downlinkoff.

PCMstreamfromdownlink.

Sidetoneisactivefordefault.

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Synaccess-networks NP-0801DTM Manuel d'utilisateur Page 323