Introducing the 4E1 +1 Fiber PDH Multiplexer by E-link—your reliable solution for seamless data transmission! This compact device features up to 4 E1 interfaces and an optional PCM digital hotline, ensuring stable communication over distances of 2-120Km. With dual optical port backup, real-time monitoring, and low power consumption, it operates efficiently in various environments. Certified with ROHS, FCC, and CE, it’s perfect for your business needs. Welcome to visit our website!