Yeastar WCDMA Module 1CDMA Trunk

The WCDMA module is a module with 1 CDMA channel that could call out by CDMA

Yeastar WCDMA (3G) Module – Specifications

General / Compatibility

• Module type: WCDMA (3G cellular / mobile-network trunk)

• Provides 1 trunk channel

• Compatible with Yeastar S‑Series PBX (e.g., S20, S50, S100, S300, S412) and supported MyPBX / NeoGate systems

• Designed to provide a mobile network trunk so the PBX can route calls over 3G/WCDMA using a SIM card

Network / Radio / SIM

• Supports WCDMA (UMTS 3G) networks

• Frequency bands depend on module version: typically 900/2100 MHz or 850/2100 MHz or 850/1900 MHz

• Uses a standard SIM card (2G/3G/4G compatible depending on network and module)

Functionality

• Supports voice calls over the mobile network trunk — both outgoing and incoming calls

• May support SMS (text messaging) through the module in some installations

• Appears to the PBX as a regular trunk line, enabling call origination and termination like a standard phone line

Use Cases / Advantages

• Ideal where fixed-line PSTN is unavailable or unreliable, using cellular 3G as a trunk

• Can act as backup/fallback if SIP/Internet or landline fails, ensuring call continuity

• Supports hybrid setups: analog extensions, VoIP extensions, and mobile trunk together for flexible telecom deployments