Best Unlocked Phones in 2026

2 dual-color line keys (with 2 SIP accounts and up to 2 call appearances), 3 XML programmable context-sensitive soft keys, 8 BLF keys, 3-way conference, multi-language support

Dual-switched Gigabit network ports, integrated PoE, HD wideband audio, full-duplex hands-free speakerphone with advanced acoustic echo cancellation, Electronic Hook Switch (EHS) with Plantronics headsets

132 x 48 pixel backlit graphical LCD display

Robust interoperability - Compatible with a broad array of sip call platforms to maximize voice quality and feature Availability, while simplifying management and Administration

Flexible configuration options - Provides multi-unit connectivity and expansion microphones, and integrates with Polycom HDX, to meet the needs of many different types of rooms

Polycom HD voice - software and hardware technology brings lifelike Audio clarity, making your conference calls more efficient and productive - built-in power over Ethernet (PoE). an optional a/C power kit also available

This Certified Refurbished product has been tested and certified to work and look like new, with minimal to no signs of wear, by a specialized third-party seller approved by Amazon. The product is backed by a minimum 90-day warranty and may arrive in a generic brown or white box. Accessories may be generic and not directly from the manufacturer.

Small, compact & discrete Handset lifter

Accessory for any Plantronics Wireless Office headset system

Audio Quality: Everyone on the call will have clear, interruption-free conversations with acoustic echo cancellation and background noise suppression. HD Voice with wideband audio delivers voice clarity for a richer and more natural sound

Wireless Convenience: Get everything you love about a desk phone with the freedom to move around the office, with an indoor range of up to 165ft (50m) and an outdoor range of up to 980ft (300m). Transfer, forward, hold, put it on speaker or set it to do not disturb. Customize calls with distinctive incoming call treatment or hop on a local three-way conferencing session. Convenient call park and push-to-talk paging make it easy to connect your customer to the right person

Lines: Multiple line support for handsets. Up to 8 simultaneous calls and up to 8 lines per handset

The cost-effective T110 Headset Telephone connect directly to an outside line and feature an ergonomically designed, firm-key dial pad that reduces the stress of continuous manual dialing.

The T110 pairs a generously cushioned, noise-canceling headset with an ergonomically designed, firm-key dial pad that reduces the stress of repeated manual dialing

The T110 features flash, mute, and redial buttons as well as three flash settings-98, 300, and 600ms-to meet specific call center requirements

DESIGNED FOR MORE DESKPHONES: DON’T BUY IT FOR CELL PHONES & COMPUTERS. This RJ9 phone headset only compatible with some specific landline Phone Models in description like Polycom ShoreTel Avaya NEC Mitel Allworx Plantronics Toshiba Zultys InterTel Siemens ROLM Aastra Packet8,etc. For other phones, please feel free to consult us for compatibility guide and advice.

WIDE COMPATIBILITY:The Polycom VVX series telephone headset can be directly connected to Polycom SoundPoint 300 301 335 430 450 500 (rev. E or later) 501 550 600 601 650 670 CX300 CX500 CX600 CX700 VVX300 VVX310 VVX400 VVX410 VVX500 VVX600 VVX1500 Avaya 4610 4610SW 4612 4620 4620SW 4621 4621SW 4622 4622SW 4625 4625W 4630 4630SW 5410 5420 5610 56205621 5625 9404 9406 9408 9504 9508 IP phones(Note: Not for Avaya: J139 J169 1608 1616 9608G 9611G 9620 9621G 9630 9640 9640G 9641G and 9650 IP Phones).

HIGH-QUALITY AUDIO EXPERIENCE: Made for clear calls, the call center landline headset is engineered with noise-canceling microphone and enhanced voice clarity technology, which ensure loud and clear communication for call centers, offices and home phones even in noisy environment.

3 SIP accounts, 3 line keys, 4-way conferencing, 3 XML programmable context-sensitive soft keys, HD audio on speakerphone and handset

Up to 1000 contacts, call history up to 200 records

Dual-switched Gigabit ports, integrated PoE

2 SIP Line

HD Voice

2 x BLF Button

Premium Audio: Enjoy natural conversations, interruption-free with full-duplex audio. Make sure every voice is heard clearly with automatic gain control. Count on audio clarity in any size space with echo and reverb cancellation

Block Background Noise: Enjoy distraction-free meetings with Poly NoiseBlockAI, which eliminates non-speech background noise

Convenience: Start a meeting in seconds with one-touch join and simplify scheduling with Outlook calendar integration. Cater to any size meeting with optional expansion microphones (sold separately) or by daisy-chaining multiple systems together

Base Unit Connectivity Technology: Corded

IP Phone Technology: VoIP

Speakerphone: Yes

Headset for Multiple VoIP Phones: BUT NOT FOR CELL PHONES & COMPUTERS. This office telephone headset with RJ9 headset jack is only compatible with some specific Landline Deskphone Models in description like Avaya Polycom ShoreTel NEC Mitel Allworx Plantronics Toshiba Zultys InterTel Siemens ROLM Aastra Packet8,etc. For other phones and models, please check them in the Product Description for compatibility list below.

RJ9 Headset Compatibility: Callez corded VoIP Phone Headset is compatible with Avaya 6402D 6408D+ 6416D+M 6424D+M 8403 8410D 8434DX 4406D+ 4412D+ 4424D+ 4424LD+ 1120 1140 1165 1210 1220 1230 1408 1416 2410 2420 4610 4610SW 4612 4620 4620SW 4621 4621SW 4622 4622SW 4625 4625W 4630 4630SW 5410 5420 5610 56205621 5625 9404 9406 9408 9504 9508 DT1 DT3 DT5 QE4610 landline phones. [NOT for Avaya J139 J169 1608 1616 9608G 9611G 9620 9621G 9630 9640 9640G 9641G and 9650 IP Phones]

Comfortable for All-day Wearing: Over-the-head Binaural Wearing Style, Lightweight Plastics Design, Soft Leatherette Ear Cushions, 330°Rotatable Microphone and Adjustable Headband to fit any head size. Acoustic Shock Protection Circuit for hearing protection to make you a full working day without discomfort.

Corded - USB Portable - White

Connectivity Technology: Corded

Features: Speakerphone, Caller ID, Noise Cancelling, Hands-free

COLOR DISPLAY: Easy to track call activity on its 5” color LCD screen.

ADDITIONAL CONTACTS: More contacts at your fingertips with 22 line keys and 3 pages — up to 66 contacts per expansion module.

ADD UP TO 2 MODULES: Track even more calls and contacts with the ability to plug up to 2 modules (E500 and E550 phones only).