linphone_core_set_capture_device(lc, "AU: Audio Unit Receiver");
\endcode
<b> GSM call interaction </b>
<br> To ensure gentle interaction with GSM calls, it is recommended to register an AudioSession delegate. This allows the application to be notified when its audio session is interrupted/resumed (presumably by a GSM call).
\code
// declare a class handling the AVAudioSessionDelegate protocol
<br>Since 3.5 video support has been added to liblinphone for IOS. It requires the application to provide liblinphone with pointers to IOS's views hosting video display and video previous.
<br> These 2 UIView objects must be passed to the core using functions #linphone_core_set_native_video_window_id() and #linphone_core_set_native_preview_window_id(). here under speudo code: