📈 Elevate Your Communication Game! Lightweight at just 4.2 ounces, perfect for space-saving installations. Designed for high-demand environments like hotels and restaurants. Easily switch between E1 (31 channels) and T1 (24 channels) for versatile communication. Stay ahead with PCI Express connectivity for enhanced data transfer speeds. Supports Asterisk, Issabel, FreePBX, and more for a customizable VoIP experience. PCI-E VoIP Ready 4 Ports The T1 Card E1 Card TE420 ISDN PRI Voice Board is a powerful 4-port solution designed for VoIP phone systems, offering seamless integration with popular open-source platforms. With its PCI-E connector and lightweight design, it’s perfect for businesses looking to enhance their communication infrastructure.