How to implement two-way audio in my mobile application?

[x3boffi]

I am currently developing an .NET MAUI mobile application and I want to integrate my HIKVISION IP speaker with my mobile application. The features I want to implement are:
1. Send the pre-recorded audio from my app to the IP speaker for output in real-time (upon clicking the play button for the specific audio) - one way audio
2. Live stream audio from my mobile app to the IP speaker (my app would have a live audio button where users can press and release to talk) - one way audio

Currently, I am only aware that I would likely have to use the ISAPI specifically these, please correct me if I'm wrong:
HTTP_TWOWAY_AUDIO_OPEN_URL "/ISAPI/System/TwoWayAudio/channels/1/open"
HTTP_TWOWAY_AUDIO_CLOSE_URL "/ISAPI/System/TwoWayAudio/channels/1/close"
HTTP_GET_TWOWAY_AUDIO_URL "/ISAPI/System/TwoWayAudio/channels/1/audioData"

Question:
1. Would I need to have the camera in the setup in order to implement the 2 way audio functionality?
a. If yes, does this mean that my ISAPI would target the camera, and the camera should bind with my speaker? or could I just directly target the IP speaker without Camera?
b. If no, does this mean that my ISAPI would target the IP speaker directly without the camera?
2. I assume that my main configurations to be made are the NVR web client and the IP Speaker web client, but what exactly do I have to configure in order to even use this ISAPI?
3. What do I need to code to implement this ISAPI call in my MAUI app?

I have attached my actual set-up of my devices. May possibly not include the camera in actual setup if not needed for my implementation.

Model: DS-PA0103-B
Brand: HIKVISION
Manufacturer: Hangzhow Hikvision Digital Technology Co., Ltd
S/N: 3012206885
P/N: 304900225

 

[NoFate]

Hey, look on github pages, there are lot of examples how to use isapi with two way audio from hikvision
I use Home Assistant in combination with go2rtc, go2rtc has a script to enable two way audio

go2rtc/pkg/isapi at master · AlexxIT/go2rtc

Ultimate camera streaming application with support RTSP, RTMP, HTTP-FLV, WebRTC, MSE, HLS, MP4, MJPEG, HomeKit, FFmpeg, etc. - AlexxIT/go2rtc

github.com

or alternative, you can use the SDK too from hikvision
here is an example on my github page to send one way audio to hikvision device:

Hikvision-Addons/hikvision-doorbell/examples/hikcli-main at dev · pergolafabio/Hikvision-Addons

Home Assistant: Hikvision Doorbell. Contribute to pergolafabio/Hikvision-Addons development by creating an account on GitHub.

github.com