BT Telephone Line Cable Adapter from RJ11 Socket Female Jack to BS6312 431A Male Plug | British UK Modular Standard Connector to 6P4C for RJ11 universal lead | 4 Wire Converter | White | Keple.com
LCH Tuk, Telephone Modular Cable, RJ11 Plug, Black | Farnell UK
4 Wire BT Plug to RJ11 Crossover Telephone Cable 3m White | CPC
4P Female to Female Telephone Cable extension connector 4P Telephone Cable Connector 4 Pin Telephone Line RJ11 adapter|female to female|female femalefemale connector pin - AliExpress
TELEPHONE CABLE CONNECTORS - TELEPHONE CABLE | Telephone cable connectors – Cable through the internet.
Wholesale 100Pcs Waterproof Gel-Filled Clear Button Telephone Wire Connectors Butt Splice Connector K2 Network Cable Terminals from China | TVC-Mall.com
BT Phone Line Plug to RJ11 Crossover Telephone Cable Extension | Lead Cord for Modem FAX SKY box Virgin Hub | British UK BT Socket 4 Wire | White – 10m | Keple.com
UY Gel Filled But Connector Telecom Splice - 3m | C&W Berry
RJ11 to BT Landline Telephone Phone Cable Lead Modem FAX Plug BT Socket 2m - 10m | eBay
1-port Desktop Telephone Junction Box Terminal Wiring Cat3 Extension Cable Adapter 6p4c Rj11 Connector For Analog Digital Phone - Pc Hardware Cables & Adapters - AliExpress
British telephone socket - Wikipedia
RS PRO Female RJ11 to Male RJ11 Telephone Extension Cable, White Sheath, 3m | RS