How to attach second audio device?

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Hi

I want to attach second audio device to conference bridge.
Device 1 headset, device 2 loudspeakers.

I tried:

// create sound port
 status = pjmedia_snd_port_create(pjsua_var.pool, rec_id2, play_id2, clock_rate, channel_count, samples_per_frame, bits_per_sample, 0, &snd_port);

// connect sound port to media port

 status = pjmedia_snd_port_connect( snd_port, media_port );

// connect media port to conference bridge
status = pjmedia_conf_add_port(pjsua_var.mconf, pjsua_var.pool, media_port, NULL, NULL);

But how to create a second media port?
status = pjmedia_null_port_create(pjsua_var.pool, clock_rate, channel_count, samples_per_frame, bits_per_sample, &media_port);

does not work...

Any idea?

Michael.
??? ??? 



      
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