Description
The WCDMA module is a module with 1 CDMA channel that could call out by CDMA
Yeastar WCDMA (3G) Module – Specifications
General / Compatibility
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Module type: WCDMA (3G cellular / mobile-network trunk)
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Provides 1 trunk channel
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Compatible with Yeastar S‑Series PBX (e.g., S20, S50, S100, S300, S412) and supported MyPBX / NeoGate systems
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Designed to provide a mobile network trunk so the PBX can route calls over 3G/WCDMA using a SIM card
Network / Radio / SIM
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Supports WCDMA (UMTS 3G) networks
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Frequency bands depend on module version: typically 900/2100 MHz or 850/2100 MHz or 850/1900 MHz
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Uses a standard SIM card (2G/3G/4G compatible depending on network and module)
Functionality
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Supports voice calls over the mobile network trunk — both outgoing and incoming calls
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May support SMS (text messaging) through the module in some installations
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Appears to the PBX as a regular trunk line, enabling call origination and termination like a standard phone line
Use Cases / Advantages
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Ideal where fixed-line PSTN is unavailable or unreliable, using cellular 3G as a trunk
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Can act as backup/fallback if SIP/Internet or landline fails, ensuring call continuity
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Supports hybrid setups: analog extensions, VoIP extensions, and mobile trunk together for flexible telecom deployments
