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What is a 2.5mm Headset Jack and 2.5mm Headset Connector?
Last Updated: 04/05/2021

2.5mm Headset Jack / 2.5mm Headset Connector / phone with 2.5mm headset jack

2.5mm headset jack is a 2.5mm diameter port for telephone headset. It is normally located at the right hand side of the phone. It has 3 conductors inside. 2.5mm headset jack is normally used for small office phones, home office phones and cordless phones’ handset.
2.5mm Headset Jack on Differerent Desktop Phones
2.5mm Headset Jack on Differerent Desktop Phones

2.5mm connector is a small round pin connector in 2.5mm diameter, with 2 black rings.
2.5mm Headset Connector
2.5mm Headset Connector

OvisLink 2.5mm headset connector compatible telephones

Following are the IP phones for office have 2.5mm headset jack and compatible with OvisLink 2.5mm headset:
    Allworx IP phone models: 9102, 9112
    Cisco SPA Small Business series: SPA303, SPA501G, SPA502G, SPA504G, SPA508G, SPA509G, SPA512G, SPA514G, SPA525G, SPA525G2
    Polycom SoundPoint IP 321, 331, 331c. Polycom SoundPoint Pro SE-220, SE-225.
Following are the home phone and home office phone have 2.5mm headset jack and compatible with OvisLink 2.5mm headset:
    AT&T desktop phone models: ML17929, ML17939, 1040, 1070, 1080, 944, 945, 955, 964, 974, 984, 983, 993
    Panasonic desktop phone models: KX-DT521, KX-DT543, KX-DT546, KX-NT543, KX-NT546, KX-NT551, KX-NT553, KX-NT556 and KX-NT560
    Home cordless phones with headset port.
Click here go to the page with all OvisLink headset models with 2.5mm connctor.

Does 2.5mm headset work with Smartphones?

No, it is not compatible. Smartphones have 3.5mm headset jack, not 2.5mm.

Deos 2.5mm headset work with computers?

No, it is not compatible.
    Most of the laptop computers have 3.5mm headset jack, not 2.5mm.
    Some computers may have 2.5mm jack, but with 4 conductors, not 3.

Available Quick Disconnect Cords with 2.5mm Connector



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