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KZ-981 VOIP Phone Gateway
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KZ-981 VOIP Phone Gateway

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KZ-981 VoIP Gateway, or Voice over IP Gateway, is a network device which helps to convert voice and fax calls, in real time, between an IP network and Public Switched Telephone Network (PSTN). It is a high performance gateway designed for Voice over IP applications.


Product Description :

1. 1 FXO and 1FXS port, can make or receive VoIP, PSTN, VoIP-to-PSTN, PSTN-to-VoIP call

2. Supported protocols: SIP(RFC2543, RFC3261), TCP/UDP/IP, PPPoE, RTP/RTCP, HTTP, ARP/RARP, ICMP, DNS, DHCP(Server/Client), NTP/SNTP, TFTP/FTP

3. Two 10/100M Ethernet ports, support NAT and Bridge mode

4. Voice codecs: G.711a/u, G.723.1, G.729A/B, G.726

5. Voice quality enhancement: QoS, VAD, CNG, Adaptive Jitter Buffer, G.165 16ms Echo Cancellation

6. Support 3 SIP accounts

7. NAT traversal: STUN, Outbound proxy

8. Auto configuration and upgrade via TFTP, FTP, HTTP; manual configuration via keypad (voice prompt), webpage, and Telnet

9. Extensive phone features: Caller ID, Call Waiting, Call Transfer (attended/blind), Do-Not-Disturb, Call Forwarding, Dial Plans, 3-Way Calling, Phonebook, Send Anonymous CID, etc.

10. User authentication

11. Signaling tone of ITU-T standard, DTMF detection and generation

12. Support T.38 fax, VLAN, DMZ, DDNS, Mac Clone, Virtual Server, SIP Encrypt

13. Ultra compact (wallet size) and lightweight design, great companion for travelers

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