Cisco Unified IP Phone 6901 and 6911 Administration Guide for Cisco …
https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cuipph/6901_6911/10_0/english/admin_guide/P691_BK_AF85A164_00_admin-guide-6901-6911-10_0/P691_BK_AF85A164_00_admin-guide-6901-6911-10_0_chapter_01.html
WEBMar 30, 2015 · Cisco Unified IP Phone 6901 supports basic features such as hold, redial, transfer, and conference. Cisco Unified IP Phone 6911 supports advanced features such as mute, hold, transfer, conference, speed dial, call forward, and more.
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