Build a dial-up ISP server using a Raspberry Pi - Raspberry Pi
Amazon.com: US Robotics USR843453C External 56K V.92 Global Dial-up Business Modem : Electronics
Amazon.com: StarTech.com USB 2.0 Fax Modem - 56K External Hardware Dial Up V.92 Modem/ Dongle/Adapter - Computer/Laptop Fax Modem - USB to Telephone Jack - USB Data Modem - Network Fax/CMR/POS (USB56KEMH2),Black :