B2 Module, Telecom, PBX Accessory, Yeastar, B2 Module
Telephony module with 2 ISDN BRI ports supporting up to 4 digital voice channels with software-configurable TE/NT operation.
Product Overview
The Yeastar B2 Module is a digital telephony expansion card equipped with 2 ISDN BRI (Basic Rate Interface) ports. Each BRI port provides 2 digital voice B-channels and 1 signaling D-channel (2B+D), delivering a total of 4 concurrent digital voice channels per module. Designed for Yeastar P-Series and S-Series IP-PBXs, the B2 module features software-switchable TE (Terminal Equipment) and NT (Network Termination) modes. This allows the PBX to either connect to telecom provider ISDN BRI lines or supply ISDN dial tone to legacy digital ISDN terminal equipment.
Why Buy This Product
4 Digital ISDN Channels
Converts 2 physical ISDN BRI lines into 4 high-clarity digital voice channels.
Jumperless TE/NT Configuration
Switch between network-side and terminal-side mode directly inside the PBX web GUI.
Digital Audio Precision
Preserves pristine digital audio quality without analog line static or attenuation.
Best for These Applications
European & Multinational Enterprises
Connecting corporate systems in regions where telecom providers deliver ISDN BRI services.
Legacy ISDN Terminals
Providing digital dial tone to legacy ISDN video conference units or ISDN phone sets.
Key Advantages
- Standard Euro-ISDN Signaling:Supports ITU-T Q.921 and Q.931 Euro-ISDN standards for universal carrier compatibility.
- Built-in Line Termination:Integrated software-selectable 100-ohm line terminators eliminate external termination blocks.
- Plug-and-Play Detection:The PBX automatically identifies the B2 module and presents configuration options.
Frequently Asked Questions
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Weight | 0.05 |
| Shipping Weight | 0.12 |
| Bri Ports | 2 |
| Expansion Slots | 1 |
| System Architecture | Modular Telephony Plug-in Card |
| Dimensions | 47 x 45 x 15 mm |
| Operating Temperature | 0°C to 40°C (32°F to 104°F) |
| Certifications | CE, FCC, RoHS |
| Stock | 5 |
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