Description
Yeastar LTE / 4G Module – Specifications
General / Compatibility
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Module type: 4G LTE (also supports 3G / WCDMA and GSM fallback)
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Provides a single LTE / mobile network trunk channel
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Compatible with Yeastar S‑Series and P‑Series PBX systems (when the system has a compatible module slot)
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Requires insertion of a standard 3G/4G SIM card
Network / Radio / Frequencies
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Supports LTE (FDD / TDD), WCDMA (3G), and GSM (2G) depending on module variant
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Typical LTE‑FDD frequency bands: B1, B3, B5, B7, B8, B20 (varies by region/module variant)
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LTE‑TDD / WCDMA / GSM fallback included depending on module variant
Voice / Data / SMS
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Supports voice calls over 4G / LTE (VoLTE) or fallback to 3G/GSM depending on network
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Supports mobile data for PBX use (e.g., SIP trunk over cellular when broadband is unavailable)
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Supports SMS functionality (send/receive SMS via SIM)
Data Speeds (Depending on Network)
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LTE‑FDD: up to ~150 Mbps download / ~50 Mbps upload
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LTE‑TDD: slightly lower data rates depending on band and operator
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3G/WCDMA fallback: standard 3G speeds
Module Installation & Usage Notes
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Insert SIM card into module; connect an external antenna for best cellular reception
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Slot requirements vary depending on PBX model and hardware version
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Provides cellular trunk / data fallback / voice-over-cellular integration for PBX
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Not a general-purpose 4G router — data feature is for PBX use only
