[Type] - 6P4C RJ11 Socket to RJ11 Plug, 1 Male plug to 2 female dual socket | [How to Use] - You just plug the adaptor into the RJ11 phone socket and plug your RJ11 cables (not supplied) into the adaptor | [Application] - They can use not only telephone but FAX machine with your Ooma VOIP telephony unit | [Durable Material] - Telephone adapter is made of durable plastic materials | [Package Includes] - Two packs of phone jack splitter and one 6P4C coupler

[High Quality] - The dsl filter for phone line is made of high-quality plastic material, with high hardness, firm and safe. The plugs of phone line filters are made of pure-copper, which ensures stable signal transmission and clear communication | [DSL Line Splitter] - One end of wall phone filter is RJ11 6P4C Male and the other ends are 2 RJ11 6P2C Female, RJ11 6P4C Male to 2 Female Telephone Modem DSL Splitter Filter allows the internet to work on your PC through the telephone line (connected to the modem of course) | [Practical Function] -The 2 wire dsl filter protects the voice signal and ADSL digital signal from the interference of a telephone and a fax machine, practical and convenient | [Wide Application] - The dsl adapter for phone line is applied to answering machines, telephones, and fax machines | [Product Size] - The size of telephone line filter is 3.3 x 4.5 x 2.2cm / 1.3" x 1.8" x 0.8" (L*W*H) and the length of cable is 2.5" (6.5cm)