White Modular Line Coupler

Monster Just Hook It Up 0 ft. L White Modular In Line Coupler

Make a network extension cord out of two 10 Base-T Cat 5 network patch cables with an RJ-45 coupler. Both jacks accept one RJ-45 plug, allowing you to plug an Ethernet cable into both sides.
Use to extend modular telephone line cord between wall plate and telephone For use with single phone line
Designed for connecting phone, modem or fax machine to wall jack