Hi all, I have a Greon GR-OS10-2Bg IP video door station (Polish rebrand of a Chinese OEM SIP panel; web UI calls itself “Linux Door Station”, model 280D, firmware GR-OS10.1.2.0.1_JW_20241113, framework 1.6.0, UI 1.4.2, MCU 2.0.3). Two call buttons, PoE, RFID reader, ONVIF camera, RS485 port. Two-family house, so each button must ring a different family. What works today: - Camera in HA via ONVIF (`camera.*` from the ONVIF integration). - Calls via SIP: panel registers to the Asterisk add-on (TECH7Fox), Ring Group maps button 1 → ext 200, button 2 → ext 201. Custom dialplan does `CURL()` to an HA webhook, then `Dial(PJSIP/…)` to the phones. - Gate/lock relay driven by ESPHome (Waveshare ESP32-S3 8DI-8RO), HA presses it from the webhook automation. What doesn’t: 1. “Http Call url” in the panel’s HttpCommands fires ONE URL on any button press – no variable for which button/room was pressed, so the only way to tell buttons apart is the SIP extension. Does anyone know if this OEM firmware supports URL variables (e.g. $room / $key) or per-button URLs? Same platform seems to be sold under other brands (DNAKE-like web UI: General / Intercom / Access / Advanced → HttpCommands, Ring Group, “Open Relay via HTTP”). 2. HTTPS webhooks from the panel to HA (Let’s Encrypt cert, TLS 1.2+) stopped arriving; plain HTTP works. Any known TLS/SNI limitation on these panels? 3. Companion app: push notification with camera snapshot arrives, but the SIP call screen on the phones does not pop up reliably. Anyone solved incoming-call UX on Android with this kind of setup (sip-hass-card / SIP Core / Linphone)? 4. The panel has an RS485 port (no settings in the UI). Has anyone sniffed it – does it emit anything on button press / unlock, or is it only for a secure relay module / reader? 5. The vendor sells a Tuya activation (Tuya Smart app), but apparently it pairs the indoor Android monitor (GR-IS series), not the door station itself. Has anyone got doorbell events from such a setup into HA via the Tuya integration (which DPs)? Alternatives I’m considering: tapping the physical buttons into the ESP32 inputs via optocouplers (fully local, no SIP in the chain), or replacing the panel with a Fanvil i10/i16 (per-key Action URL). Before I do, I’d like to hear from anyone running this OEM platform. Thanks!