Yealink BT40 USB Dongle for Bluetooth Headsets
The Yealink BT40 is a USB Bluetooth dongle that adds wireless headset connectivity to compatible Yealink IP desk phones. It supports Bluetooth specification V4.0+HS, with backward compatibility to Bluetooth 1.1 through 3.0, making it usable with a wide range of third-party Bluetooth headsets from brands like Jabra, Plantronics, and Sennheiser. Once plugged in, it lets users answer, terminate, and adjust call volume directly from a wireless headset, with an operating range of around 10 metres. The dongle also supports multipoint connections to up to 4 Bluetooth devices simultaneously.
Key Features
- Bluetooth V4.0+HS, backward compatible with Bluetooth 1.1 through 3.0
- A2DP technology with wideband audio support, for clearer wireless call quality
- Answer, terminate, and adjust volume directly from the connected Bluetooth headset
- Multipoint support for up to 4 Bluetooth devices connected simultaneously
- 10-metre operating range, allowing calls to be taken away from the desk phone
Technical Specifications
| Specification | Detail |
|---|---|
| Model | BT40 |
| Type | USB Bluetooth Dongle |
| Bluetooth Specification | V4.0+HS (backward compatible with 1.1, 1.2, 2.0, 3.0) |
| Audio Support | A2DP, wideband audio, EDR (2Mbps and 3Mbps) |
| Operating Range | Approx. 10 metres (30 feet) |
| Multipoint | Up to 4 Bluetooth devices simultaneously |
| Frequency Range | 2.402GHz–2.480GHz |
| Compatible Phones | Yealink SIP-T27G, T29G, T41S, T42S, T46G, T46S, T48G, T48S |
| Product Status | Discontinued — EOL as of May 31, 2019; support ended May 31, 2024 |
Best Suited For
- Existing owners of compatible Yealink T2X/T4X phones who already use the BT40 and need a spare or replacement unit
- Small offices with legacy Yealink desk phones wanting Bluetooth headset support without upgrading hardware
- Buyers aware of the EOL status, purchasing as legacy stock rather than expecting ongoing manufacturer support
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