Disclaimers: There is a risk to bring new issues when using a patch or upgrade to a temp firmware, please make a backup, download, and save before doing this. Upgrade to the normal firmware will recover.
Device Model: S series
Firmware Version: 18.104.22.168
1. Fix no video issue when calling from Hikvision door phone(KD8003) to Yealink T58
2. May impact the video calls between other endpoints
3. Upgrade Firmware will lose the fix
Upload the patch from the PBX app center