... Port VPN(PPTP,L2TP) POE (optional) 5 SIP Lines VPN PoE VoIP SIP Phone GT-P300A/300B • Performance and features ... For each GT-P300A,It can be register 3-SIP account,all can used as callee at anytime.It ... also can be slected among these 3-SIP account as caller by dial different dial prefix. For ... each GT-P300B ,it can have 3-SIP account and one PSTN phone number,that means each ...