Cisco Unified Ip Phone 7975G, 7971G-Ge, 7970G, 7965G, And 7945G Components; Cisco Unified Ip Phone 7975G Buttons And Hardware; Cisco Unified Ip Phone 7970G And 7971G-Ge Buttons And Hardware - Cisco 7975G Software Manual
Administration guide for cisco unified communications manager 9.0 (sccp and sip)