Description
The Poly CS540 (7W073AA#ABA) is a convertible DECT wireless headset built for professionals who spend the majority of their day on the phone at a desk. It delivers up to 12 hours of talk time and 400 feet of wireless range over DECT 1920–1930 MHz, with three wearing styles — over-the-head, over-the-ear, and behind-the-neck — so users can find the fit that stays comfortable all day. SoundGuard audio protection limits sudden loud sounds, and auto-answer support via an HL10 lifter or EHS cable means calls can be handled without ever touching the phone.
The Telecom Spot Take
The CS540 remains one of the most trusted desk-phone wireless headsets in the market for a reason: it simply works. For customer service teams, administrative staff, and anyone who fields dozens of calls a day, the 12-hour talk time covers a full shift with room to spare, and the 400-foot range is enough for most office floors. The convertible wearing system is genuinely useful — agents with over-ear fatigue can switch to behind-the-neck mid-shift without swapping headsets. Pair it with an HL10 lifter (sold separately, or bundled as 80R99AA#ABA) for fully hands-free operation. If you need multi-shift density for a large call center floor, consider the CS510-XD instead; for most single-user desk deployments the CS540 is the right call.
Key Features
- Up to 12 Hours Talk Time: Covers a full agent shift on a single charge, reducing mid-day charging interruptions.
- 400 ft / 120 m Wireless Range: Roam the office floor, break room, or filing area while staying connected to an active call.
- Three Convertible Wearing Styles: Switch between over-the-head, over-the-ear, and behind-the-neck configurations to reduce fatigue during long wearing sessions.
- SoundGuard Audio Protection: Limits sound levels to protect hearing during unexpected loud audio events on calls.
- Auto-Answer Ready: Compatible with the Poly HL10 handset lifter and EHS cables for fully hands-free remote call answer.
- DECT 1920–1930 MHz: Operates on the dedicated DECT band, avoiding interference from Wi-Fi, Bluetooth, and other 2.4 GHz devices.
- Wideband Audio: Clear, natural voice reproduction on both ends of the call.
Technical Specifications
| Specification | Detail |
|---|---|
| HP SKU | 7W073AA#ABA |
| Wireless Technology | DECT 1920–1930 MHz |
| Talk Time | Up to 12 hours |
| Wireless Range | Up to 400 ft / 120 m |
| Wearing Styles | Over-the-head, over-the-ear, behind-the-neck |
| Audio | Mono (monaural), wideband |
| Audio Protection | SoundGuard |
| Phone Connectivity | Desk phone via RJ-11 base |
| Auto-Answer | Compatible with HL10 lifter and EHS cables |
Comparison at a Glance
| CS540 (this product) | Savi 7210 Office | Jabra Pro 920 | |
|---|---|---|---|
| Talk Time | Up to 12 hrs | Up to 13 hrs | Up to 8 hrs |
| Range | 400 ft | 590 ft | 295 ft |
| Wearing Styles | 3 convertible | 3 convertible | 1 (over-the-ear) |
| PC Connection | Desk phone only | Desk phone + PC + mobile | Desk phone only |
| Teams Certified | No | Optional (7S439AA#ABA) | No |
Frequently Asked Questions
- Does the CS540 work with a PC or softphone?
- No — the CS540 connects to desk phones only via its RJ-11 base. For combined desk phone and PC/softphone connectivity, consider the Savi 7210 or Savi 8210, which support 3-way connection.
- Does the CS540 come with a handset lifter for auto-answer?
- No — the CS540 (7W073AA#ABA) ships without a lifter. For auto-answer, add the HL10 Handset Lifter (784Q2AA) separately, or purchase the CS540A with HL10 bundle (80R99AA#ABA) instead.
- Can I use the CS540 with multiple phones on the same desk?
- The CS540 base connects to one desk phone via a single RJ-11 connection. It does not support simultaneous multi-phone pairing.
- Is the CS540 TAA compliant?
- The 7W073AA#ABA (US DECT 1920–1930 MHz) variant sold here is TAA compliant and suitable for US federal procurement.