XBLUE XB1606CH 6-Handset 6-Telephone Line Capacity, Charcoal Save Money with the Self-Install XBLUE X16 Business Phone System.X16 maximum system capacity: (6) telephone company lines and (16) X16 telephones.The X16 is a digital telephone system that operates independently of the Internet. Every X16 system includes Automated Attendant for live or backup call answering.Every X16 phone has its own individual Voice Mail Box with on-site and remote access.The X16 can be VoIP enabled by adding XBLUE VoIP line service. Popular features include Conferencing & Call Forwarding to outside numbers or cell phones.Call Announce Intercom with Hands Free Reply improves & streamlines internal calling.Music on Hold is built-in, or you can connect your own custom Music. Each company phone line has a button on every X16 phone in the system.Hold enables calls to be easily retrieved at any phone by just pushing a button.All phones include an Eye-Catching back-lit display that shows Caller ID, Call Logs and other details. Interactive display buttons enable easy access to stored Caller ID's, Phonebook and Programming.Each phone has (12) user programmable buttons for one-touch intercom and feature access.Each programmable button indicates busy extension status.