A front door and gate can ring the house two different ways: through a Crestron-native door station that calls touch screens and the Crestron app, or through a UniFi Access intercom that calls phones and ties into UniFi Protect's camera and License Plate Unlock features. Neither is wrong, but they route calls, unlock hardware, and survive an internet outage differently enough that the choice should be made deliberately, not by whichever brand happens to be already in the rack. The decision usually comes down to whether the house is already built around Crestron touch screens or around a phone-first UniFi ecosystem.
How does a Crestron door station actually ring the house?
Crestron's own approach runs through Rava, a SIP-based intercom and phone technology built into most current Crestron touch screens and the Crestron app, working over the existing Ethernet network with no special wiring or switchers required (RAVA). Two or more Rava devices on the same network set up peer-to-peer intercom automatically, and Rava can also bridge to a SIP VoIP system so an outside door station rings alongside office or cell phones on the same call.
For an actual video door station, Crestron doesn't manufacture its own hardware; it partners with third parties. DoorBird integrates natively with Crestron Home OS — live video, door unlock, and two-way talk appear directly on Crestron touch screens with no extra drivers, and DoorBird's own app answers the door when nobody's near a panel, at no extra cost (DoorBird). CAME door stations take a different path: a primary CAME unit acts as its own mini server, and Crestron TSW-series touch screens register to it as SIP users (CAME Door Station). In that configuration, calls flow one way — the CAME door station can place a call with audio and video to the touch screens, but a call or video feed from the touch screens back to the door station is not supported. That one-way limitation is worth asking your integrator about directly, since it means a CAME-based gate station cannot receive a call placed from inside the house the way a DoorBird station can.
How does a UniFi Access intercom ring the house instead?
UniFi's G3 Intercom is a PoE-powered indoor/outdoor terminal that connects directly to a UniFi Access Hub, combining a camera, two-way audio and doorbell call, an access directory, and support for Apple Touch Pass, PIN, and NFC card or keyfob access in one unit (UniFi Intercoms). Instead of ringing a wall-mounted touch screen, a UniFi intercom call goes to the UniFi Access app on a phone (or an Intercom Viewer display), so routing a gate call to whoever is actually carrying their phone that day is the native behavior rather than something layered on top.
For the gate itself, UniFi's Gate Hub is built specifically to authorize gate access with License Plate Unlock, reading a plate and triggering the gate relay without anyone answering a call at all (UniFi Door Access Control Hubs). That's a meaningfully different workflow from a Crestron-side door station, where a license plate event has to be handed off through the control system's own camera integration to trigger the same action.
What happens when nobody answers the call?
This is where the two architectures diverge most for an owner who travels. A Crestron Home DoorBird integration answers through the free DoorBird app when no one is near a touch screen, so the call still reaches someone even when the house itself is empty. On the UniFi side, the Access app is phone-first by design, so an unanswered call already defaults to ringing a mobile device rather than a fixed panel; the practical question for your integrator becomes how many staff phones are provisioned to receive that call, and what the fallback is if none of them pick up — ask whether a one-time or scheduled access code for a housekeeper or delivery can be set up on your platform, and confirm and test it before move-in rather than assuming it's there.
What does each station need for wiring and power?
Both approaches run on PoE over structured Ethernet rather than proprietary low-voltage wiring, which simplifies budgeting across a front door and gate. UniFi's intercoms and hubs are PoE powered, and the Gate Hub and Door Hub units carry their own relay and auxiliary terminals for gate operators, strikes, and request-to-exit devices on the same box (UniFi Door Access Control Hubs). CAME door stations connect over PoE Ethernet to the Crestron Home processor and touch screens as well, with the CAME documentation requiring every Ethernet device on the segment to carry a static IP address (CAME Door Station). Ask your network installer to confirm the exact power class each door station and hub needs before cable gets pulled, since that detail should be settled well ahead of commissioning day.
What keeps working if the internet drops?
Rava's peer-to-peer intercom between Crestron devices operates over the local network rather than depending on an internet connection, so touch-screen-to-touch-screen and touch-screen-to-door-station calling inside the property should keep functioning on local Ethernet even if the WAN is down; it's the SIP bridge to outside phone lines, and any cloud-hosted app connection, that depends on internet reaching the house. On the UniFi side, ask your integrator which unlock methods are read and actioned locally at the hub versus which depend on the Access app reaching the cloud — a gate or door that only works through a phone app with no local credential option is a single point of failure worth raising at design time on either platform.
Both paths sit inside a broader security plan, not apart from it — an intercom or gate decision is one layer in a property's full security upgrade, alongside cameras, access control, and alarm monitoring. Cave Group designs around Crestron for control and works with the UniFi Access and Protect ecosystem as part of its security stack, and can walk through which door-station architecture fits an existing system before hardware is ordered.
Frequently asked questions
Can a CAME door station call a Crestron touch screen and receive a video call back?
No. CAME's documented integration supports calls from the door station to Crestron touch screens with audio and video, but calls from the touch screens back to the CAME door station are not supported in that configuration.
Does a UniFi gate intercom require someone to answer before the gate opens?
Not necessarily. The Gate Hub supports License Plate Unlock, which authorizes entry directly from a recognized plate without anyone answering an intercom call, in addition to PIN, NFC, and app-based unlock options.
Does DoorBird only work through the Crestron app?
No. DoorBird integrates natively with Crestron Home OS for calls on touch screens, and also offers its own app so the door can be answered when no one is near a panel, at no extra cost.
What powers a Crestron or UniFi door station — does it need special wiring?
Both ecosystems run their door and gate hardware over PoE Ethernet rather than proprietary low-voltage cabling; CAME's documentation requires every Ethernet device on the segment, including the door station, to have a static IP address.
Is intercom calling between Crestron devices dependent on internet access?
Rava's peer-to-peer intercom between Crestron touch screens and compatible devices works over the local network, so it should continue functioning without an internet connection; SIP bridging to outside phone lines and any cloud app access depend on the WAN being up.