Yealink phones don't use Plantronics or Jabra EHS cables — Yealink makes its own adapters, and picking the wrong one is the most common reason remote answering doesn't work. Here's which adapter your phone needs, how to connect it, and the settings that fix static and echo.
Quick answer
Last updated July 2026
EHS36 or EHS40? Check your model first
This is the step that catches people out, because the two adapters look similar but cover different generations of Yealink phone.
Use the EHS36 for: T26P, T27P, T27G, T28P, T29G, T38G, T40P, T40G, T41P, T42G, T46G, T48G.
Use the EHS40 for: T41S, T42S, T46S, T48S, T53, T53W, T54W, T57W, T58A.
Myth
The "S" version of my Yealink phone uses the same EHS adapter as the original — a T46S is just a T46G with a minor update.Reality
Not for EHS purposes. The newer "S" and "W" series Yealink phones (T41S, T42S, T46S, T48S, and the T5x W models) require the EHS40 adapter, not the EHS36 that fits the earlier non-S models. Check the exact suffix on your phone before ordering — an EHS36 bought for a T46S won't do the job.Connecting the EHS36
The EHS36 uses three separate connections, and all three need to be right:
- 3.5mm cable — from the EHS36 to the base of your wireless headset.
- RJ12 cable — from the EHS36 to the EXT port on the back of the desk phone. You may need to turn the phone over to find it, depending on the model.
- RJ11 cable — to the black headset port on the back of the Yealink, next to the receiver port.
Settings that fix static, feedback, and echo
Connecting the adapter correctly is only half of it — if the headset's own settings are wrong, you'll get static, feedback, or echo even with a perfect connection. These settings work for most Yealink setups:
- Configuration switch: A
- Speaking (transmit) volume: 3
- Listening (receive) volume: around 2
Start there, then fine-tune from that baseline rather than from the factory defaults.
Adding a busylight: the port conflict
Worth knowing before you order one: the EHS36 occupies the 3.5mm port on your wireless headset's base — the same port a busylight would use. To run both, you need a 3.5mm splitter, which isn't a part we stock, so you'd need to source it separately.
Firmware: a genuine last resort
If everything above checks out and remote answering still doesn't work, outdated firmware on the phone (or on the EHS36 itself) can be the cause. Treat this as a last step, not an early one, and have an IT professional or your service provider handle it — a failed firmware update can leave the phone unusable, which is a far worse problem than the one you started with.
Compatible wireless headsets
The setup above applies to Plantronics/Poly wireless headsets paired with the Yealink EHS36. The Poly CS540 is the most common pairing and remains current.
If you're working from an older parts list, note that several Savi bundles once sold for Yealink setups — the Savi 8210, 8220, and 8240, along with the CS510 — have since been discontinued. Call our team to confirm the current Savi or CS-series bundle that matches your exact Yealink model.
Does my Yealink phone use a Plantronics or Jabra EHS cable?
Neither. Yealink makes its own EHS adapters — the EHS36 for older models and the EHS40 for the newer "S" and "W" series. Plantronics APx-series and Jabra Link cables are for other phone brands.
What's the difference between the Yealink EHS36 and EHS40?
They cover different generations. The EHS36 fits the T26P, T27P, T27G, T28P, T29G, T38G, T40P, T40G, T41P, T42G, T46G, and T48G. The EHS40 is required for the newer T41S, T42S, T46S, T48S, T53, T53W, T54W, T57W, and T58A.
How do I connect a Yealink EHS36?
Three connections: the 3.5mm cable goes to your wireless headset's base, the RJ12 cable goes to the EXT port on the back of the phone, and the RJ11 cable goes to the black headset port next to the receiver port.
Why do I get static or echo with my Yealink EHS36 setup?
Usually headset settings rather than the adapter. Try configuration switch A, speaking volume 3, and listening volume around 2 as a starting baseline, then fine-tune from there.
Can I use a busylight with a Yealink EHS36 setup?
Only with a 3.5mm splitter. The EHS36 occupies the 3.5mm port on the wireless headset base that a busylight would otherwise use, so both need to share that port via a splitter sourced separately.
Most Yealink EHS problems come down to two things: the wrong adapter for your model generation, or headset settings left at defaults. Confirm your exact model suffix first, then work through the settings above. Call our team at 877-999-3838 with your Yealink model number and headset and we'll confirm the right combination.
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