Dualcomm RJ45 / RJ11 Cable Sharing Kit - Connecting your Ethernet and Telephone lines by One Network Cable : Amazon.co.uk: Computers & Accessories
RJ45 to RJ11 Splitter for A1610P/E [SP143] - $24.00 : OpenVoxusa
RJ45 8p8c Male to Rj11 6p4c Female Ethernet Telephone Converter Adapter RJ45 Male to Rj11 Female Adapter Splitter Cable - China Cable Splitter and RJ45 Cable
ADSL Broadband Modem Phone Line Splitter Filter RJ11 RJ45 adapter White | eBay
Rj11 Male to RJ45 Female Extension Telephone Cord Rj11 to RJ45 Converter Splitter Cable - China Cable Splitter and RJ45 Cable
RJ45 to RJ11 Splitter for A2410P/E [SP142] - $36.00 : OpenVoxusa