Wisenet / Samsung IP cameras and 2-way audio

[yorkie]

I have a Samsung PNF-9010RV and a Wisenet XNF-8010R fisheye camera (one is 12mp, the other 6mp) and am having issues with the audio interface.

Getting sound FROM the cameras is fine, though the Samsung one is a fair bit quieter than the newer Wisenet one.... My problem is getting any audio TO the cameras.

I'm currently trying with the Wisenet one first as that's a bit newer; I have a suitable mono jack plug inserted into the audio out pigtail, which then goes to a Valcom amplified speaker that has been tested and is known working. The camera is connected to a Hikvision DS-7716NI-E4/16P NVR which I can access through Hikconnect - when I activate 2-way audio on other cameras connected to this NVR the output will work, yet if I then go to the feed for this camera or the Samsung one and select the microphone icon it shows a 'loading' box for a few seconds then "operation failed". This is the same if the camera is connected to the NVR through it's own PoE port OR if the camera is connected through a network switch. If I navigate to the camera's own Web GUI page, the frontend page shows a preview video feed and yet the microphone icon there is also disabled (and this is with the 'audio out' checkbox enabled in settings) - if I click the icon it stays disabled, even if I access it from my phone (so it can't be an issue around not finding a talk microphone).

The camera can handle sound through either AAC, G.726, or G.711 codec - I've tried all three and still get the same result. In fact, G.726 won't work in 1-way audio, the sound from the camera goes mute.

Anybody know what could be causing this or how to resolve it?

 

[TonyR]

Getting sound FROM the cameras is fine... My problem is getting any audio TO the cameras.

I'm currently trying with the Wisenet one first as that's a bit newer; I have a suitable mono jack plug inserted into the audio out pigtail, which then goes to a Valcom amplified speaker that has been tested and is known working.

It's not clear (at least to me) where you have a microphone or audio source connected to either camera's audio INPUT....did I miss that?

 

[yorkie]

It's not clear (at least to me) where you have a microphone or audio source connected to either camera's audio INPUT....did I miss that?

the camera has a built-in microphone to send audio to the NVR - and that works fine.... it's talkback from Hikconnect to the audio output on the camera that seems to be troublesome. I've tried it on iSpy too and there's nothing.

 

[TonyR]

the camera has a built-in microphone to send audio to the NVR - and that works fine....

I understand that.

it's talkback from Hikconnect to the audio output on the camera that seems to be troublesome.

Again, I get that.
I'll restate what I said in my post #2 but this time in the form of a question: "Do you have a microphone or audio source connected to either camera's audio INPUT ?"

EDIT 6/14 @ 0746 CDT: BTW, do the specs for both or either of these cameras state that it has a built-in speaker to accommodate an audio INPUT ?

 

[yorkie]

"Do you have a microphone or audio source connected to either camera's audio INPUT ?"

EDIT 6/14 @ 0746 CDT: BTW, do the specs for both or either of these cameras state that it has a built-in speaker to accommodate an audio INPUT ?

The audio input jack socket for these cameras is basically line in, and the manual reads as if this is to be used as an alternative to the built-in microphone for if an amplified mic is being used.
There is no built-in speaker, instead there is a pigtail connection marked as "Speaker" to which I have connected a jackplug which goes to an amplified speaker

Page 8

https://www.networkwebcams.co.uk/content/pdf/samsung-wisenet/wisenet-xnf-8010r-user-manual.pdf

Then on page 14:
"You can use the built-in microphone in the camera without connecting an external microphone "