https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cuipph/MPP/6800-DECT/userguide/p685_b_dect-phone-6800-user-guide/p685_b_dect-phone-6825-user-guide_chapter_011.html
Cisco IP DECT 6800 Series User Guide - Contacts and Directories [Cisco IP DECT 6800 Series with...
Contacts and Directories
contacts and directoriescisco ip6800 seriesuser guidedect