Amazon.com: URBEST 2 pcs rj11 male to female two way telephone splitter converter cable : Electronics
Slim DIN Rail Mount RJ11/RJ12 6P6C 3 Jacks Splitter Buss Board Interface Module. Busboard, Bus board.
Amazon.com: RetailAndBulk 2-Way RJ11 Splitter Female to Female 6P4C Telephone Line Adapter with Cable (Black, 2-Pack) : Electronics
5 x Outlet 6P4C RJ11 RJ12 Tele Phone Modular Jack Line Splitter Adapter Hub | eBay
Amazon.com: NECABLES 1+1Pack Phone Jack Splitter 5 Way RJ11 6P4C 1 Male to 5 Females with 5in Pigtail and Telephone Line Coupler for Landline and Fax Ivory : Electronics
NTI RJ11-3JCK
Amazon.com: Phone Line Splitter, Vcall Phone Jack Splitter, RJ11 Splitter,Phone Cord Splitter,Telephone Line Splitter RJ11 6P4C Male to 2 Way Female Socket Telephone Extension Cable (2 Pcs,Black) : Electronics
1-Wire Bus 1x2 Splitter, 6P4C (RJ11) Connectors - Sealevel
1-Wire Bus 1x3 Splitter, 6P4C (RJ11) Connectors - Sealevel
Rj11 Splitter 6p4c 1 Male To 5 Female Telephone Splitter,five Way Telephone Splitters, Rj11 Phone Socket Jack Converter - Communications Parts - AliExpress