This is the cable connecting a modem or router to the telephone line. ADSL applications usually call for an RJ11-RJ11 type, suitably for plugging in to a microfilter, filtered wallbox, or ADSL adaptor on the BT Master box.

There's also an RJ11-BT variant which is typically used for dialup modems, or to allow connection of any modem directly into the test socket inside a BT Master box, for example.

Modem Cables

Sort by: SKU Product Price Default Click to see details Uber Modem Cable RJ11-RJ11 SKU: adsl/cab/rj11-rj11/pro Quite possibly the mightiest RJ11-RJ11 modem cable ever devised by mankind, this beast is not only aesthetically beautiful, but almost sci-fi specification. The cable has a braid-and-foil shield layer to protect from troublesome EMI/RFI interference from external sources. Read on... Price: £9.31 including VAT £1.39 Buy Now Click to see details UK Modem Lead, RJ11-BT plug, 3 Metres SKU: tel/cab/rj11-BT/3 UK modem lead, flat telephony cable, 4-wires. RJ11 plug to BT-style plug. This is the cable used between your modem and a BT wall socket (for example, ADSL modem straight to an unfiltered BT wall socket if filtering is not required/implemented at that linebox.) More... Price: £4.10 including VAT £0.61 Quantity 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Buy Now Add to wish list Click to see details UK Modem Lead, RJ11-RJ11 SKU: tel/cab/rj11-rj11 UK Modem lead, flat telephony cable, 2 wires. RJ11 plugs on both ends. This is the cable used between your modem and an RJ11 or RJ45 telephone line jack, (for example, ADSL modem to BT's ADSL adaptor or microfilter), 3m, 5m and 10m lengths. Read More... Price: £4.58 including VAT £0.68 Buy Now