1m RJ11 to RJ45 Cable Ethernet Modem Data Telephone ASDL Patch Lead Broadband High Speed BT Internet Plug 6P4C to 8P8C Flat Network Extension Cord Compatible with Modem, Router, Landline Wire (White):
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RJ11-RJ45 Telephone Cable - 6m
1.80m Phone Cable with RJ45 ISDN Western plug 8/2 to RJ11 Western plu
RJ11 Phone to RJ45 Jack
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1 X Telephone RJ11 6P4C to RJ45 8P8C RJ45 to RJ11 Network to Telephone Connector Plug Cable : Amazon.co.uk: Electronics & Photo
Telephone Line Adaptor Phone Fax BT RJ11 RJ45 Plug Socket Male Female Converter | eBay