/ Protocols · protocol
IEEE 802.3bt (PoE++).
Also known as · PoE++ · 802.3bt · Type 3 PoE · Type 4 PoE
Power-over-Ethernet at Type 3 (51 W device) and Type 4 (71.3 W device) classes — the power floor for Wi-Fi 7 APs, large PTZ cameras with heater, AV-over-IP encoders and small powered displays. Shared switch budget, per-port negotiation.
- Entity kind
- protocol
- Relevance
- 90 / 100
- Authority
- 90 / 100
- Aliases
- PoE++ · 802.3bt · Type 3 PoE · Type 4 PoE
/ Engineering meaning
What it is and where it sits
Power-over-Ethernet at Type 3 (51 W device) and Type 4 (71.3 W device) classes — the power floor for Wi-Fi 7 APs, large PTZ cameras with heater, AV-over-IP encoders and small powered displays. Shared switch budget, per-port negotiation.
Tags · protocol · poe · networking
Engineering graph
What this connects to (outgoing edges)
Engineering graph
What references this (incoming edges)
Depends on
Mixed AP-Class Wi-Fi Density
Wi-Fi 6 four-stream APs in high-density public areas + Wi-Fi 5 or entry-tier Wi-Fi 6 APs in lower-density guest zones on a mesh backhaul — protocol-grade seamless roam without the cost penalty of uniform Wi-Fi 6 or the capacity collapse of uniform Wi-Fi 5.
Depends on
Hospital ELV Stack
Clinical-occupancy ELV coordination — fire-alarm, nurse-call, medical-gas alarm, access-control, IP-CCTV and BMS converging on a cause-and-effect supervisory matrix with NABH pressure-boundary discipline and OT-anaesthesia acknowledgement-delay tiers.
Semantic similarity
Similar entities in the graph
Similarity 66
Cat6A Structured Cabling
Augmented Category 6 structured cabling — 10 Gbps over the full 100 m channel, rated for 25 years of service. The default for any new commercial or premium-residential cabling layer.
Similarity 63
Mixed AP-Class Wi-Fi Density
Wi-Fi 6 four-stream APs in high-density public areas + Wi-Fi 5 or entry-tier Wi-Fi 6 APs in lower-density guest zones on a mesh backhaul — protocol-grade seamless roam without the cost penalty of uniform Wi-Fi 6 or the capacity collapse of uniform Wi-Fi 5.
Similarity 40
Hospital ELV Stack
Clinical-occupancy ELV coordination — fire-alarm, nurse-call, medical-gas alarm, access-control, IP-CCTV and BMS converging on a cause-and-effect supervisory matrix with NABH pressure-boundary discipline and OT-anaesthesia acknowledgement-delay tiers.
Similarity 28
Power over Ethernet (IEEE 802.3)
IEEE-standard delivery of low-voltage DC power over the same Cat-class cable as data. PoE+ delivers up to 30 W; PoE++ Type 3/4 up to 90 W — sufficient for IP cameras, APs, VOIP phones and small displays.
· Engineering entity · protocol