Video Intercom Supplier: 4-Wire, SIP, Wi-Fi & PoE Systems

Start with the entrance type and available network. Shared entrances normally require a call panel and defined call path; a private retrofit can use a Wi-Fi kit. Confirm users, credentials, lock hardware and existing site conditions before selecting the route.

Local calling and door release may continue when the selected devices remain powered and registered on the same local network. Remote app answering, push notifications and cloud services require Internet access. Confirm the model, topology, lock controller and failure behaviour before quotation. Review the offline-operation guidance →

Capacity must be stated for the exact door station, indoor station, extender, platform and firmware. Confirm apartment count, concurrent calls, directory size, network and power limits; do not use a headline unit number as a project capacity calculation. Review the sizing guidance →

Compatibility depends on the lock type, power supply, relay or controller interface and the required fail-safe behaviour. Confirm NO/NC wiring, voltage, door sensor, exit button and fire-release requirements against the selected model before ordering. Review the access-interface guidance →

A second lock is possible only when the selected door station or controller provides the required output and the wiring, power and permissions are defined. Confirm whether the two locks are independent, how each is labelled, and how local, mobile and emergency release behave. Request a two-lock wiring review →

Both endpoints can unlock only when the selected indoor monitor, mobile service and lock path support that workflow. Confirm account binding, permissions, simultaneous ringing, audit logs and what remains available during an Internet or cloud outage. Review the mobile and indoor-monitor workflow →

No. SIP registration and ONVIF video discovery do not guarantee the same features on every PBX, NVR or VMS. Verify the exact model, firmware, codecs, events, audio direction and door-release path, then run a test with the named platform. Review the SIP/ONVIF checklist →

Check power, network or bus wiring, device registration, room numbers, stream and audio settings, lock power, NO/NC selection, door sensor and permissions in that order. Separate communication faults from lock-control faults, record the model and firmware, and escalate with logs when the basic checks do not restore service. Open the troubleshooting checklist →

Documents are checked for the product and version. Requirements can differ by destination, radio version and supply scope, so provide the proposed product and destination before quotation.

Provide the property type, number of entrances, entry hardware, target market, preferred connection path, required delivery date and any branding or documentation request.

Branding and packaging depend on the model and order volume. Review their documentation impact together with model selection.

The review can cover configuration guidance, interface requirements, model documents and a quotation-ready supply scope. Specify acceptance checks and post-purchase support in the project quotation.