SYSPINE A50 -8FXO A50-8FXO. Syspine Response Point Phone System - A50 Base Unit (8FXO) - It s powered by Microsoft Response Point - option to add up to 50 Syspine IP Phone. Special Designs are: Server-Grade hardware and Fanless - User-Friendly Interface- Window Installation Wizard- Voicemail- Forward call to Cell- and fully integration with Microsoft Outlook