FEATURES 5.8 Digital Expandable System Two Line Operation - Allows you to access two seperate phone lines (with Subscription Through Your Local Telephone Company) 10 Handset Maximum Expandability** - **Compatible with TCX860 Handset Caller ID/Call Waiting Deluxe† - To activate the Caller ID and/or VoiceMail features, you must subscribe through your local telephone company. Base Keypad Handset Speakerphone - This feature gives you the freedom to use the handset as a speakerphone. Base Duple