Amazon.com: VoiceJoy Headset Headphones with Volume+Mute Control+Standard 2.5mm Plug Jack for Cisco SPA Series Spa303 Spa504g and Other, Polycom Soundpoint IP 320 330, Grandstream, Linksys,Cortelco : Electronics
Amazon.com: PwrON 5V Power Supply Adapter for Cisco IP Phones SPA500, 501G, 508G, CP500, SPA900, SPA504G, SPA303, SPA922, SPA942 and SPA962, Cisco SPA Series Phones Charger Power Cord : Electronics
Amazon.com: Lantisri 5V Power Supply Adapter fit for Cisco IP Phones SPA525G2, SPA504G, SPA303, SPA508G, SPA922, SPA942, and SPA962, SPA300, SPA500, CP500, SPA900, Cisco SPA Series Phones Charging Power Cord : Electronics
Amazon.com : CISCO SPA525G2 5-Line IP Phone Without Power Supply (Renewed) : Office Products
Amazon.com : Cisco 7942G IP Phone (Renewed) : Office Products