Zultys IP phones (33i, 35i, 36g, 37g, 51e, 53e, 53i, 55i, 57i, 57i CT, 59i) accept headsets through the phone's direct-connect headset jack, so a headset with the right cable plugs straight in — no amplifier needed. Here's what to buy, corded or wireless.
Quick answer
Last updated July 2026
Corded headsets for Zultys phones
The Jabra 1920 direct connect headset is the affordable option, starting at $84.95, and plugs straight into the Zultys phone's headset jack — no separate cable or amplifier required.
Wireless headsets for Zultys phones
If your budget allows, we recommend going wireless for the freedom to move away from your desk during calls.
Myth
The Jabra Pro 920 is still the go-to wireless headset for Zultys phones.Reality
It's discontinued. The Jabra Engage 65 SE is the current equivalent — a DECT wireless headset with improved range, battery life, and headset density for busy offices. It connects to Zultys phones the same way, with a compatible Jabra EHS cable enabling remote answer.Poly CS540
Jabra Engage 65 SE
Remote answering: EHS cable instead of a lifter
As a bonus for wireless setups, an EHS (electronic hook switch) cable can be used instead of a mechanical handset lifter, letting you answer and end calls remotely straight from the headset. The Plantronics APS-11 Savi/CS500 EHS cable works with the Poly CS540, and a compatible Jabra EHS cable works with the Engage 65 SE — confirm the exact cable with our team, since Jabra's EHS cable lineup has been updated since older guides referenced the Link 10.
What headset works with a Zultys IP phone?
Zultys phones (33i, 35i, 36g, 37g, 51e, 53e, 53i, 55i, 57i, 57i CT, 59i) connect a corded headset directly through the headset jack — the Jabra 1920 direct connect is the affordable option. For wireless, the Poly CS540 or Jabra Engage 65 SE are the current picks.
Do I need an EHS cable for a wireless headset on a Zultys phone?
An EHS cable enables remote answering — picking up a call from the headset without touching the phone. The Plantronics APS-11 works with the Poly CS540. It's an alternative to a mechanical handset lifter and generally the more convenient option.
What replaced the Jabra Pro 920 for Zultys phones?
The Jabra Pro 920 is discontinued. The Jabra Engage 65 SE is the current DECT wireless replacement, with better range, battery life, and headset density for busy offices, connecting to Zultys phones the same way with a compatible EHS cable.
Zultys compatibility comes down to a straightforward choice: an affordable corded headset plugged straight into the headset jack, or a wireless system with an EHS cable for remote answering. Call our headset experts at 877-999-3838 with your exact Zultys model if you have questions.
Comments (0)