Yeastar 4G-LTE-MODULE-AU 4G LTE Module for S-Series VoIP PBX

4G Voice over LTE Module for Yeastar PBX models S20, S50, S100, S300

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This 4G LTE Module provides full voice capabilities, high speed data transmission for S-Series VoIP PBX, supporting 3G/4G network standard, Voice over LTE, and powerful SMS features.

Yeastar enables 4G cellular data on SIM card with 4G LTE Module, making the 4G LTE become the primary internet connection for S-Series VoIP PBX. Supporting 3G/4G network standard and high speed data transmission, the 4G capable S-Series VoIP PBX can register SIP trunks and make SIP calls with built-in data. VoLTE is also possible with carrier support.


  • Using 4G LTE as the primary internet connection for S-Series VoIP PBX
  • Providing 4G LTE network failover for business continuity
  • Calling with VoLTE for faster voice connection and better call quality

PBX Model Compatibility : S20, S50, S100, S300 (Version or higher)

Network Type : UMTS (WCDMA) 3G / LTE
Frequency :
LTE FDD: B1/B2/B3/B4/B5/B7/B8/B28
WCDMA: B1/B2/B5/B8

SMS : Yes
MMS : No
Voice Call : 3G/4G Voice Call
SIM Card : 3G/4G Mini SIM Card
Data : 3G/4G Data
3G Data Speed : Max 384 Kbps (DL) / Max 384 Kbps (UL)
LTE Data Speed : LTE-FDD: Max 150 Mbps (DL) / Max 50 Mbps (UL)
LTE-TDD: Max 130 Mbps (DL) / Max 35 Mbps (UL)
Module Insertion : S20&S50: Module Slot 1; S100&S300: Module Slot 1, Expansion Board 1
Call Waiting : No
Call Forward : Yes
RF Cable (on Module) : MAIN T1 (To strengthen signal, 2 RF cable can be installed and occupy 2 antenna ports, except for S20, which only has 1 antenna port.)