Support PPPoE, (used for ADSL, cable modem Nconnecting)? Support Three sip servers running at the same time.?Call Forward, Call Transfer, 3-way conference calls? NAT Support, Simple firewall?Adjustable audio Frames , Adjustable Payload Size? Dynamic...
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VOIP, VOIP PHONE, IP PHONE,VOIP GATEWAY,GATEWAY, ATA, USB PHONE, WIRE...
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