Telephone group system,2CO.line ports and 8ext.ports. Caller ID on operator phone(FSK/DTMF) Ext.call restrict call transfer call time limited
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WILSONIC DEVELOPMENT CO.,LTD.VIP会员第13年
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Telephone group system,2CO.line ports and 8ext.ports. Caller ID on operator phone(FSK/DTMF) Ext.call restrict call transfer call time limited
