JABRA Pro 920 Mono Shoretel IP Phone Wireless Headset EHS Remote Bundle
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