
Stable Clear Voice Modular Full Duplex Analog PBX Telephone Exchange. Flexible Port Expansion: Supports 16 to 224 ports to adapt to business growth. Full Duplex Transmission: Ensures stable, clear, and interference-free voice calls. Modular Structure Design: Allows for easy upgrades and simplified daily maintenance. Compact Space Saving: Fits seamlessly into any office, hotel, or factory environment. Comprehensive Warranty: Includes 100% factory inspection and 12-month full unit warranty. Free Usage Guides: Provides free manuals and installation videos for all users. Full Customization Options: Offers full customization from samples, designs, and minor adjustments. ISO Certified Quality: Manufactured under ISO9001, ISO14001, and ISO45001 standards.