Module-Designed VoIP Gateway with 16 Ports

Features: 1) Module designed structure: separated mainframe and voice card, variousassembled way, easy extend 2) Standard communication protocol: SVG6116 supports mainstream protocol-voiceover IP (VoIP) using SIP (session initiation protocol) 2.0 3) High-quality voice: using the special DSP with voice quality enhancements,such as dynamic voice jitter buffer (DVJB), voice activity detection (VAD), comfortnoise generation (CNG), echo cancellation (EC), packet retrieve; it providesthe same voice quality as PSTN phone 4) Support all kinds of voice encode standard: supports G.711A, G.711U, G.723.1,G.726, G.729A/AB protocols for different broadband 5) Bandwidth control and QoS: control the bandwidth of voice stream and datamessage though four Ethernet ports switch inside; and by using the QoS protocolin layer 2, 3 to set up the priority of communication, guarantee the qualityof voice communication first 6) Applying for various applications 7) Supports FXS<->IP, FXS<->FXO, FXO<->IP all directions calling, as well as portTrunking, link aggregation control protocol (LACP) 8) Auto-answer function: when calling from PSTN reach gateway, it can answerwith voice to guide the user to make a second dialing or change to the hotline Protocol standards: SIP: 1) RFC 3261 (SIP: Session Initiation Protocol) 2) RFC 3262 (Reliability of Provisional Responses in Session Initiation Protocol (SIP) 3) RFC 3263 (Locating SIP Servers) 4) RFC 3264 (An Offer / Answer Model with Session Description Protocol (SDP) 5) RFC 3265 (SIP Specific Event Notification) 6) RFC 3266 (Support for IPv6 in Session Description Protocol (SDP) published) 7) RFC 2327 (SDP-Session Description Protocol) 8) RFC 2976 (The SIP INFO Method) 9) RFC 3428 (Session Initiation Protocol (SIP) Extension for Instant Message) 10) RFC 3515 (The Session Initiation Protocol (SIP) Refer Method)STUN: RFC3489 (Simple Traversal of User Datagram Protocol (UDP) Through Network Address Translators (NATs)RTP/RTCP: 1) RFC 1889 (A Transport Protocol for Real-Time Application) 2) RFC 1890 (Profile for Audio and Video Conferences with Minimal Control) 3) RFC 2032 (RTP Payload Format for H.261 Video Streams) 4) RFC 2190 (RTP Payload Format for H.263 Video Streams) 5) RFC 2833(RTP Payload for DTMF Digits, Telephony Tones and Telephony Signals)DHCP: 1) RFC1541 (Dynamic Host Configuration Protocol) 2) RFC 951 (BOOTSTRAP PROTOCOL (BOOTP)) 3) RFC1084 (BOOTP Vendor Information Extensions) 4) RFC1123 (Requirements for Internet Hosts -- Application and Support) 5) RFC1533 (DHCP Options and BOOTP Vendor Extensions) 6) RFC1534 (Interoperation Between DHCP and BOOTP) 7) RFC1497 (BOOTP Vendor Information Extensions)DNS: 1) RFC1034 (DOMAIN NAMES - CONCEPTS AND FACILITIES) 2) RFC1035 (DOMAIN NAMES - IMPLEMENTATION AND SPECIFICATION) 3) RFC1123 (Requirements for Internet Hosts--Application and Support) 4) RFC1886 (DNS Extensions to support IP version 6) 5) RFC1995 (Incremental Zone Transfer in DNS) 6) RFC1996 (A Mechanism for Prompt Notification of Zone Changes (DNS NOTIFY) 7) RFC2136 (Dynamic Updates in the Domain Name System (DNS UPDATE) 8) RFC2181 (Clarifications to the DNS Specification) 9) RFC2308 (Negative Caching of DNS Queries (DNS NCACHE) 10) RFC2535 (Domain Name System Security Extensions) 11) RFC2671 (Extension Mechanisms for DNS (EDNS0) 12) RFC2782 (A DNS RR for specifying the location of services (DNS SRV)PPPoE SNTP HTTP: 1) RFC2616 (Hypertext Transfer Protocol - HTTP/1.1) 2) RFC2774 (An HTTP Extension Framework ) 3) RFC4229 (HTTP Header Field Registrations) 4) RFC2660 (The Secure HyperText Transfer Protocol) Product specifications: 1) Power input: AC 110 - 240V, 47 - 63Hz 2) Wastage: <40W (in condition of 16 voice port) 3) Network port: Ethernet x 4 IEEE 802.3 / 802.3U 10 / 100 Base-T, Auto-MIDX 4) Control port: RS-232 x 1