DECT 6.0 Technology means less interferance Supports up to 8 phone numbers (DID), and 3 simultaneous calls IETF SIPv2, Broadworks R15, Asterisk Wide Band Audio (G.722) handset speakerphone Lighted Handset Keypad Handset Locator / Handset Intercom White Backlit LCD on handset Ni-MH Batteries included Headset Jack Wall Mountable