Polycom SoundPoint Pro SE-220 & SE-225 conference Phones & SoundPoint 320, 321,330, 331 IP Phones GrandStream GXP-2000 IP Phones Software Version 1.0 or higher with 2.5mm Headset Socket Plug: 2.5mm Stereo Phone Plug for GrandStream GXP-2000 IP Phones versions 1.0 or higher This auction is for (1) CallTel T400 Headset with 2.5mm Stereo Plug for Cell Phones with a 2.5mm Headset Jack and for GrandStream GXP-2000 IP Phones version 0.4 or lower. They plug into your GrandStream GXP-2000 IP Phone versions 1.0 or later directly. What's in the box: Headset shown above with a cord with 2.5mm handset plug. Features soft cord, superior sound quality and extremely comfortable fit design for all-day use.
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