Panasonic KX-TG1063PK Corded with 3 Cordless Handset Telephones Call block. Silent mode. Ringer-ID. Light-up indicator with ringer/charge alert. Lighted handset keypad. Call waiting caller ID. Handset locator. Handset intercom. Speakerphone on handset and base. Up to 3-way conference capability. Base unit works during power outage. Additional cordless handset model #KX-TGA106M Expandability: Expandable up to six handsets.