Audio codec and auto negotiation ?

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Audio codec and auto negotiation ?

sp2ong
Hi,

I am not sure how this svxlink decide about use audio codec when
connect other node to
svxlink. But it maybe in configuration echolunk module we can use
instead GSM_ONLY option form example like asterisk  preferred audio codec :

AUDIO_CODECS=OPUS,SPEEX,GSM

first we would like use OPUS if connected node not support, svxlink
will be propose SPEEX and last GSM

or
AUDIO_CODECS=GSM for use only GSM

If we use QTEL compile during svxlink with support OPUS codec we will be use
durng connection QTEL ->SVXLINK OPUS codec. It maybe in QTEL add
option preferred
AUDIO CODECS

Maybe "Echolink" MSWindows softwarewill be in future support OPUS code

It maybe we need add for OPUS codec parameters in configuration where we define
what sample rate for opus codec 8000, 12000,24000, 48000 for example:
OPUS_SAMPLERATE=


                    ;  sample rate | bitrate range
                    ;  8khz        | 6000 - 20000 bps
                    ;  12khz       | 7000 - 25000 bps
                    ;  16khz       | 8000 - 30000 bps
                    ;  24khz       | 18000- 28000 bps
                    ;  48khz       | 24000- 32000 bps



73 Waldek SP2ONG

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