No sound in my iOS mobile device with CloudXR ARKit Client (iOS)

Xcode log showing : Client doesn’t implement RenderAudio().
There is an implementation of RenderAudio in CloudXRClient.h [cxrBool (RenderAudio)(void context, const cxrAudioFrame* audioFrame);]

Is there any additional step for iOS to receive the audio from server?

server: NICE DCV
app : unity
CloudXR Client Log 2023-02-06 21.33.18.txt (1.6 KB)