Quick Reference Guide: Overview of Cisco 7942/7962 IP Phone – Router Switch Blog
Headset for Cisco IP Phone
Dual Ear Headset Headphones Adjustable Volume Mute Control for Cisco IP Telephone 7931 7940 7960 7970 7962 7975 7961 7971 7960 M12 M22 and All 79xx Series - Walmart.com
Amazon.com: Headset Compatible with Cisco 7940 7941 7942 7945 7960 7961 7962 7965 7970 7971 7975 Sound Emphasized Monaural Noise Cancel Mic Phone Call Center Headset : Electronics