Help with Hikvision Doorbell Registered to Asterisk SIP server

[josh4trunks]

Hello, I have a Hikvision Doorbell, model DS-KB8113-IME1(B), and have it registered to an Asterisk server running on my LAN. I am using just the doorbell > Asterisk > Linphone App, and do not have a Hikvision Indoor Station. I was able to get the following scenarios partially working, but was hoping to iron out the kinks.

Doorbell Button to call single phone
By using Progress(), and enabling early media on the linphone app, I get a video and audio preview before answering the call.
But, the doorbell seems to hangup after ~32 seconds into the call, which is much shorter than the “Max Call Duration” I have in the doorbells settings.
See hangup log attached.

Videocall Doorbell from phone
Doorbell automatically answers and I get 2-way audio, but no video from the doorbell. Or maybe there is video, but it is a black screen?
See novideo log attached.

Maybe these two issues are caused because of Hikvision specific quirks? This thread was posted on by a Hikvision Engineer that provided a possibly useful diagram.

Hikvision DS-KD8003 SIP

Environment: Asterisk server 13.8.3 (IP 192.168.22.196) Hikvision DS-KD8003 is registered to the Asterisk ID 7000 (IP 192.168.22.100) Windows MikroSIP Client is registered to the Asterisk ID 7100 (IP 192.168.22.20) I…

community.asterisk.org

Thanks for the help!