PLANTRONICS HW540-CIS Cisco IP Phone Headset 88828-01-CIS
Cisco SPA504G Charcoal IP Display Speakerphone - Grade A
Cisco certified Jabra Biz 1925 QD Direct Connect Headset Bundle for Ci – Newfangled Networks
Cisco SPA504G
Amazon.com: Headset Headphones with Volume+Mute Control+Standard 2.5mm Plug Jack Compatible for Cisco SPA Series Spa303 Spa504g and Other, Polycom Soundpoint IP 320 330, Grandstream, Panasonic, Cortelco : Electronics
Cisco SPA501G 8-Line IP Phone with 2-Port Switch, PoE and Paper Label
PLANTRONICS HW520-SPA Cisco IP Phone Headset
Cisco SPA504G 4-Line IP Phone Grade B
Amazon.com: TruVoice HD-500 Deluxe Single Ear Headset with Noise Canceling Microphone and 2.5mm Cable for Cisco SPA303, SPA502g, SPA504g, SPA508g, SPA509g, SPA514g, SPA525g and Phones with a 2.5mm Headset Port : Electronics