The X-25 VoIP System is perfect for offices with up to (16) employees. The XBLUE Innovative "Do-It-Yourself" system design makes it very easy to self-install. In addition to saving a ton of money on professional installation, you can reduce your monthly phone line expenses by using XBLUE Cloud VoIP Telephone lines. Or, feel free to continue to use traditional telephone lines as the unique X-25 Hybrid VoIP design provides your choice of using either traditional phone lines or XBLUE's business grade VoIP telephone lines, or both! The X-25 Communications Server / Wireless Router is equipped for the connection of up to (4) traditional telephone company lines plus (4) VoIP telephone lines and up to (16) X-25 (model X-2020) system telephones – no additional software or license purchases are required! The X-25 includes popular features for small business like Automated Attendant, Voice Mail Boxes for every system user, Caller ID, Call Hold, Transfer, Conferencing, Call Forward to your Cell Phone, Paging and Music On Hold (use internal or upload your own music file).This X-25 (4) phone system bundle includes (1) X-25 VoIP Communications Server / Wireless Router with Quick Start Guide, Data Cable & Line Cords (Model # XB2500-00), (4) X-2020 IP Telephones (model # X-2020) and (1) eight port data switch (model # 47-9004) for the easy connection of X-25 system telephones. XBLUE is a US company with over 15,000 telephone systems installed in the US and Canada.