For a dense, fixed-seat call centre, yes: a wired USB headset is still the most dependable choice. It has no radio to congest, no battery to run flat mid-shift, no pairing to redo when agents swap desks, and nothing to charge or misplace overnight. It's also the cheapest option per seat by a wide margin. Bluetooth is designed for knowledge workers who move between a phone and a laptop, not for a hall of agents on back-to-back calls. Where agents genuinely need to move, the enterprise wireless answer is usually DECT, not Bluetooth. Choose by seat type rather than by fashion.
How do wired USB, DECT and Bluetooth compare for a contact centre?
| Factor | Wired USB | DECT (e.g. Jabra Engage SE) | Bluetooth |
|---|---|---|---|
| Range | Cable length | Up to 150 m line of sight (Jabra) | Jabra says DECT reaches up to 15 times the range of an average Class 2 Bluetooth device |
| Many headsets in one room | No radio, so no interference between seats | Jabra says Engage 75 SE supports up to "3x more users in the same office space" | Shares the crowded 2.4 GHz band with Wi-Fi and other devices |
| Battery | None | Up to 13 hours' talk time (Jabra); replaceable on some models | Varies by model |
| Link security | No wireless link | 256-bit AES, DECT Security Level C (Jabra) | Depends on pairing and implementation |
| Desk swaps and hot-desking | Plug in and go | Headset paired to its own base | Re-pairing or a dongle per user |
| Example price per seat | S$55 (Yealink UH34 mono) | S$360 (Jabra Engage 55 SE mono) | S$315 (Jabra Evolve2 65 MS mono) |
| 100 seats, headsets only (CALC) | S$5,500 | S$36,000 | S$31,500 |
Source: Jabra product pages for Engage 55 SE and Engage 75 SE (manufacturer claims, checked 8 Nov 2026); Microsoft Learn Teams peripheral guidance (13 Aug 2026); SourceIT listed prices including GST (listed 8 Nov 2026). CALC (illustrative): headset cost only, one headset per seat; excludes spares, cushions and installation. SourceIT has not tested these headsets.
Why does Bluetooth struggle in call centres?
Four practical reasons.
Radio density. A hundred agents in one room means a hundred Bluetooth links sharing the same 2.4 GHz band as the office Wi-Fi, wireless mice and phones. We could find no published figure for how many Bluetooth headsets a given floor area supports, so we won't invent one. But contact-centre wireless ranges such as Jabra Engage use DECT rather than Bluetooth, and Jabra markets the Engage 75 SE on density. Wired headsets sidestep the question entirely.
The laptop's radio. Microsoft notes that Bluetooth headset performance "depends on the host's Bluetooth radio, and some users may still need a USB dongle." In a contact centre, that means a dongle per seat anyway, at which point a wired USB headset is simpler. Without the dongle, calls fall back to the laptop's hands-free profile, which sounds noticeably worse, a problem we cover in our Bluetooth headset on Teams fix.
Batteries and shifts. A wireless headset that lasts a full day for an office worker may not survive a double shift with back-to-back calls, and the next shift then finds it flat. Wired headsets draw power from the PC.
Pairing and hot desks. Rotating agents across desks with Bluetooth means re-pairing or carrying personal dongles. With USB, agents plug in and the softphone or Teams finds the device, provided it's set up as we describe in why your headset works on Zoom but fails on Teams.
Rule of thumb: if the agent sits at one desk all shift, go wired USB. If they walk, choose DECT. Save Bluetooth for staff who move between a mobile phone and a laptop.
When does wireless make sense in a contact centre?
When agents genuinely need to move: supervisors walking the floor, agents who fetch files or check stock mid-call, or help desks in retail and logistics. Then DECT has clear advantages over Bluetooth. Jabra quotes up to 150 m line of sight for the Engage 55 SE, encryption to DECT Security Level C and up to 13 hours' talk time. Jabra also states that the stereo and mono Engage 55 SE batteries are user-replaceable, while the convertible model's is not. DECT headsets are sold in regional variants that use different frequency bands, so buy the variant supplied for Singapore. We compare DECT and Bluetooth in depth in DECT vs Bluetooth headsets for the office.
Wired has downsides too. Cables snag on chairs, plugs wear out, and agents feel tethered. Quick-disconnect (QD) headsets for desk phones help with the first two, but need a matching QD cable or amplifier. Ask us to quote the right one for your phone system.
What else should a contact centre check?
- Platform certification. Teams-certified (MS) or UC variants for Zoom and other softphones. Check your contact-centre software vendor's supported-device list as well; we explain the variants in MS or UC, wired or wireless.
- Mono or stereo. Mono lets agents hear the room and supervisors. Stereo blocks more of the floor noise.
- Wideband audio. Business headsets support wideband voice. Jabra lists a 100 Hz–7.3 kHz microphone range for the Engage 55 SE.
- Hygiene. Wired headsets are cheap enough to issue one per agent. For shared headsets, replace cushions rather than headsets, as we cost out in replacing ear cushions instead of headsets.
- Standardisation. One or two models across the floor keeps spares and firmware simple. Our Yealink USB headset comparison covers a full wired range.
Buying in Singapore
Wired USB options listed in stock include the Yealink UH34 mono UC at S$55, Poly EncorePro 515 USB mono at S$133.38, Poly EncorePro 545 USB convertible at S$142.41, Jabra Engage 40 stereo MS at S$240 and Jabra Engage 50 II mono MS at S$335. For mobile agents, DECT options include the Jabra Engage 55 SE mono MS at S$360 and the Yealink WH64 Dual DECT at S$270. Browse Poly EncorePro contact-centre headsets and the Jabra Engage series. Prices change; ask for a current quotation, especially for volume orders. Use Request for Quotation on the product page, call (65) 6978 3502, email Sales@sourceit.com.sg or use our contact page.
Frequently asked questions
Are USB headsets better than Bluetooth for call centres? For fixed-seat agents, usually yes. Wired USB has no radio congestion, no battery and no pairing, and costs far less per seat.
Is DECT better than Bluetooth for contact centres? For agents who move around, generally yes. DECT is designed for dense office use, and Jabra quotes up to 150 m range for its Engage SE range.
How much do call-centre headsets cost per seat? In our current listings, wired USB headsets start at about S$55, DECT at about S$270 and business Bluetooth models with a dongle at about S$186–S$315, depending on model.
Do Bluetooth headsets need a dongle for Teams calls? Microsoft notes that Bluetooth performance depends on the computer's radio and some users may need a USB dongle. Business Bluetooth headsets usually include one.
Mono or stereo for a call centre? Mono lets agents hear colleagues and supervisors; stereo blocks more background noise. Many contact centres mix both by role.
