Check the listing for details. Steren Telephone Modular 2-line Split Adapter (300324) (300-324). Condition: New. Listed at 5.85 USD. MODULAR 2-LINE TRIPLEX JACK 4-2-2 Converts 2-line phone jack to a triple configuration. Instructions: 1. Plug the adapter into existing modular phone jack. 2. Plug any single-line device (answering machine, phone) in line 1 or line 3 jack on separator. 3. Plug any two-line device (two-line phone) in line 2 or 3 jack on separator. Note: most homes are wired for 1 or 2 line service. For 3 lines,the home or office must be wired with 6 conductor or 8 conductor for 4 lines.Triplex Phone Adapter Plug any two-line device (two-line phone) in line 1, 2 or 3 PORT(S) YOU CAN ALSO USE OUR 15' or 25' Phone Power Cord Extension for added length - as well as a Single Line Extension Cord. Phone Extension Cord with Firm Fitting Connection. Single Line Phone Extension Jack. Reliable Phone Extension Cord Ivory. Froo www.froo.com | Froo Cross Sell, Free Cross Sell, Cross promote, eBay Marketing, eBay listing Apps, eBay Apps, eBay Application