Linksys SPA2102 Analog VoIP Adapter with 2 FXS Ports (Free to do pre-
Cisco Linksys Sipura SPA-2100 VoiP Telephone Adapter
Linksys LGS352C - 48 Ports 10/100/1000 Mbps + 4 Gigabit SFP+(4x10Gbps) , Linksys Managed Gigabit Switches , Web Management, 256VLANs,CPU Memory DRAM 512MB, Link Aggregation, Spanning Tree Supported + Metal case + FAX by Linksys
Amazon.com: Cisco-Linksys WRT54GP2 Wireless-G Broadband Router for Vonage Internet Phone Service : Electronics