Based on WLL/PSTN telecommunication platform, and as a integrated wireless information gateway of WLL/PSTN voice, short message (SMS), virtual private mobile network (VPMN), WLL/PSTN PBX (EWIG6000 series) colligated and expanded core functions of traditional PSTN PBX, SMS and WLL fixed wireless phone (FWP).EWIG6000 WLL/PSTN PBX can choose WLL (Wireless Local
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