1)Supports Session Initiation Protocol (SIP)
2)One Ethernet ports; Two RJ11voice portsfor analog phones
3)More high voice quality
1)Support SIP<br />2)Support two models: Bridge and Router<br />3)Support two SIP server synchronously<br />4)Reverse polarity
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1)Support SIP and H.323
2)Built-in Internet gateway function
3)4FXS 4)Support NAT & NAPT
1)Support SIP & H.323<br />2)Built-in Internet gateway function<br />3)2FXS 4)A better voice quality
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1)Support SIP & H.323
2)Built-in Internet gateway function
3)NAT & NAPT
4)Support DHCP server
1)Support Bridge and router
2)Support SIP & IAX2
3)Support 2 SIP servers synchronously
4)Support silence suppression
1)Support 3 SIP servers running at the same time
2)DHCP Client DHCP Server PPPoE Client
3)3-way conference calls
1)Support 3 SIP servers
2)1FXS+1PSTN
3)VAD-Voice Activity detection
4)Plug and play
1)Support SIP
2)Built-in Internet gateway function
3)1 WAN, 1 FXS
4)Supporting remote configuration of Web mode
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