Features: High-quality adapter converts one RJ9 4P4C socket to two sockets. RJ9 phone splitter adapter for IP phones. Installation is convenient and provides reliable performance. Ideal for headsets, office phones, call centers, and telephone training applications. Easy to set up—plug and play. When used for an external call, both phones will ring, and either phone can be used to answer or make calls. Constructed from durable PVC material for long-lasting use. Specifications: Material: PVC Color: Black Interface: RJ9 4P4C (male) to dual RJ9 4P4C (female) Length: Approx. 40 cm / 15.74 inches Note: 1. Please allow 1–2 cm error due to manual measurement. Ensure you are comfortable with this before ordering. 2. Due to differences in monitor displays, the actual color of the item may vary slightly from the image. Package includes: 1 x Extension Cable