Handset Volume Control - Adjusts incoming call volume to desired level. Ringer Volume Control - Adjusts loudness of ringer. 10 Number Memory - Speeds dialing of frequently used numbers. One-Touch Redial - Quickly redials the last number dialed Flash Function - Allows access to subscription telephone services like 3-Way calling. Easy Wall Mount Capability - Enables installation flexibility. Phone can sit on a flat surface or be hung on a wall. Tone/Pulse Switchable Dialing - Allows any combination of tone and pulse dialing. Hearing Aid Compatible - Allows people with hearing aids to use the phone.