Jabra Link EHS Cable for Avaya Phones 14201-19 - Headset World USA
Computer Wireless headset For Aastra / Mitel 5370, 5370ip, 5380, 5380ip, 5730 ip, 6739i, 6751i, 6753i, 6755i, 6757i, 6757iCT, 6771, 6773ip, 6775ip, 7434ip, office 80 ip + Computer VoIP calls
Plantronics CS540 EHS Wireless headset
Plantronics APP-51 Electronic Hookswitch Adapter EHS Cable (formerly APP-50) for Polycom and Digium IP
Amazon.com: Sennheiser SD PRO2 - Deskphone Cordless Headset with NEC EHS Adapter - Compatible Phones: Digital NEC Phones DT3xx and DT4xx, IP Phones DT7xx and DT8xx* (i-SIP/N-SIP) : Office Products