20m Telephone Extension Cable RJ11(BT Male to BT Female) 88BT-020
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Loops 25M BT Telephone Master Socket/Box Line Extension Professional Cable Kit - 10m 15m 20m Lead : Amazon.co.uk: Electronics & Photo
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Telephone Cable RJ11 4-Wire (20m) - Cablematic
Super High Speed ADSL 2+ Cable Telephone Extension RJ11-RJ11 20m Cat5e BT Broadband up to 10 Times faster than Standard Phone Cable Gold Plated Connector Premium Quality by RGB Networks Ltd. (20m).:
20m Long HQ Flat Slimline Telephone Phone Line Extension Cable BT Virgin Fax B55 for sale online | eBay
UK Telephone Extension 20M | PCHelp Sussex
RJ11 UK BT Telephone, Fax Modem, Fax Machine Extension Cable 1m to 20m | eBay
1STec 20m Roll of Genuine BT CW1415 Dropwire 11 Overhead Single Pair Outdoor Telephone Drop Wire Main Line Cable + 2 Entry Grommets and IDC Insertion Tool (20 Metre): Amazon.co.uk: DIY & Tools
Long 20m BT Extension Cable - Flat Cable (White) - 6 Way | Telephone Extension Cable | Cables4all
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MainCore 20m long White BT Telephone Extension Cable Lead For Office & Home 6 Wire (631a) BT Male to BT Female (Available in 2m, 3m, 5m, 10m, 15m, 20m) (20m): Amazon.co.uk: Electronics