iMBAPrice (2-Pack) 50 Feet RJ11 4C Modular Long Telephone Extension Phone Cord Cable Line Wire - White - Walmart.com
Amazon.com : Cablesys Coiled Telephone Handset Cord for Use with PBX Phone Systems, VoIP Telephones - 12 Ft Uncoiled, Rj22, 1.5 Inch Lead on Both Ends, Light Gray : Telephone Cords : Office Products
Amazon.com: VoiceJoy RJ9 Headset Adapter Extension Cord - Female to Male 4P4C Cable, not RJ11/RJ12, for Plantronics, Jabra, & Desking Office Phones : Electronics
Amazon.com: VoiceJoy RJ9 Headset Adapter Extension Cable- Female 4P4C to Male 4P4C Cable, not RJ11/RJ12, for Plantronics, Jabra, & Hot Desking Office Phones : Electronics
Adapter Extension Cord, 2 In 1 RJ-9 Double Female To Male 4P4C Adapter Cable - Walmart.com