Yeastar B2 Module is an expansion card designed to add two BRI (ISDN Basic Rate Interface) ports to compatible Yeastar PBX systems. It offers two 64 kbit/s bearer channels and a 16 kbit/s data channel for voice or user data, enabling high-quality digital telephony. The module is compatible with all Yeastar S-Series PBXs, and P-Series models including P550, P560 (supports up to 4 modules), and P570 (supports up to 8 modules). The ports can operate in NT or TE mode, offering flexible configuration for various deployment scenarios. Ideal for businesses transitioning from analog to digital systems or integrating ISDN infrastructure.
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