
High Performance 16 224 Ports Modular Analog PBX Telephone Exchange. Flexible Port Expansion: Supports 16 to 224 ports to adapt to business growth. Modular Structure Design: Enables easy upgrade and daily maintenance for the system. Full Duplex Transmission: Ensures clear, interference-free voice calls with stable analog signals. Compact Space Saving Design: Fits any office environment with a high-performance compact form factor. 12-Month Full Unit Warranty: Includes 100% factory inspection and comprehensive coverage. Free Usage Guide: Provides free manual and installation videos for all customers. OEM and ODM Services: Offers full customization, minor customization, and design-based options. ISO Certified Quality: Manufactured under ISO9001, ISO14001, and ISO45001 management systems.