Yeastar B2 Module — 2‑Port ISDN BRI Expansion Module
The Yeastar B2 Module is a modular ISDN BRI expansion card that adds dual BRI (NT/TE) ports to compatible Yeastar VoIP PBX systems — ideal for integrating digital ISDN lines and channels into hybrid telephony deployments.
Yeastar B2 Module — Dual BRI (ISDN) Ports for PBX Expansion
The Yeastar B2 Module is a compact and reliable 2-Port ISDN BRI expansion module designed to enhance the telephony capabilities of compatible Yeastar VoIP gateways and PBX systems. By adding ISDN BRI connectivity, the B2 Module enables integration with digital ISDN networks, providing businesses with flexible voice and data communication options where traditional analog or SIP trunks need augmentation.
Featuring two independent ISDN BRI ports, the module supports digital voice trunking, ISDN-based data services, and smooth interoperability with IP-PBX systems. Its seamless integration ensures efficient call routing, robust signaling support, and enhanced network flexibility — making it ideal for offices, branch sites, retail environments, and business continuity applications.
Whether deployed as a primary BRI trunk, a backup for SIP/PSTN connections, or as part of a hybrid telephony strategy, the Yeastar B2 Module delivers dependable performance, simplified installation, and expanded trunking options for modern communication infrastructures.
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