G-PLUG 5m Long BT Telephone Cable to RJ11 ADSL Modem Male – 2 Wires 6P2C White Extension Lead for Landline, Modem, Fax, Dial-up, Sky: Amazon.co.uk: Electronics & Photo
Loops 15M BT Telephone Master Socket/Box Line Extend Extension Cable Kit - 10m 15m Lead : Amazon.co.uk: Computers & Accessories
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10m BT Telephone Extension Cable Lead Full 6 Wire Male Plug to Female Socket for Office & Home Broadband Cord Compatible with Telephone, Fax, Handset, Modem (White): Amazon.co.uk: Electronics & Photo
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rhinocables ADSL RJ11 Lead High-Speed Internet Cable for BT, Internet, Broadband, Modem, Router and Landline Telephone Wire (10m): Amazon.co.uk: Electronics & Photo