All Yealink phones can be powered via PoE or through power cords. They support 802.3af for PoE, and have various powercord strengths for different models.
Model | Power Supply | PoE | 802.3af Class | ||||
---|---|---|---|---|---|---|---|
Standby | Typical | Max | Standby | Typical | Max | ||
T40P | 1.0 | 1.1 | 1.3 | 1.4 | n/a | 3.2 | Class 2 |
T41S | 1.3 | 1.9 | 3.0 | 1.7 | 2.5 | 3.8 | Class 2 |
T42S | 1.7 | 2.2 | 3.2 | 2.5 | 3.1 | 4.7 | Class 2 |
T46S | 1.9 | 2.5 | 4.0 | 2.7 | 3.4 | 5.5 | Class 3 |
T48S | 2.2 | 3.5 | 4.9 | 3.2 | 5.4 | 7.5 | Class 3 |
T54W | 1.7 | 3.0 | 4.3 | 2.2 | 3.9 | 5.5 | Class 3 |
IEEE Class | Minimum Required at Power On | Maximum Required during Use |
---|---|---|
0 | 15.4W | 0.44 to 12.95W |
1 | 4.0W | 0.44 to 3.84W |
2 | 7.0W | 3.84 to 6.49W |
3 | 15.4W | 6.49 to 12.95W |