ESPECIFICAÇÃO TÉCNICA>Portas LAN- 4 portasRJ-45 10/100BASE-TX Ethernet NWay- NAT/PAT, DHCP (Servidor), DMZ, Virtual Server, MAC/IP/port-based filtering- QoS: port based priority (Hi/Low) with rate limit- Modo Roteador ou Bridge >Porta WAN- RJ-45 10/100BASE-TX Ethernet Nway- Static IP, PPPoE, PPtP, Bigpond Cable e DHCP (Cliente)- QoS: IP TOS (IP Precedence), DiffServ, Port Priority- NAT traversal: STUN, UPnP, OUTBOUND PROXY- Pass-through NAT- NAP: (Network Time Protocol RFC 1305), suporta até 3 servidores de horário- DDNS: DynDns.org, TZO, PeanutHull, 3322.org.- RTP Packet Summary: packet sent, packet received, packet loss- MAC address clone >Interface Analógica- DVG-6004S: 4 portas RJ-11 FXO >Características de Voz- SIP (RFC3261)- SIP method: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS- PING, PRACK, PUBLISH, REFER, REGISTER, SUBSCRIBE, UPDATE- SIP Extension: Session Timer (UPDATE or re-INVITE), Proxy Required, P-Asserted (RFC3325), MWI(RFC3842)- Voice CODEC: G.711 a /u law, G.726, G.729A, G.723.1- CNG (Comfort Noise Generation)- VAD (Voice Activity Detection)- Silence suppression/detection- G.165/G.168 echo cancellation- Adaptive Jitter Buffer and programmable Gain Control- In-Band DTMF, Out-Of-Band DTMF relay (RFC2833, SIP INFO)- Multiple SIP Proxy server entries with fail-over mechanism- T.30 (G.III) / Real time T.38 / Secured T.38 FAX relay- DTMF, FSK (Bellcore & ETSI) Caller ID detection and generation- Caller ID Restriction (CLIR) support- FXO hang up detection: Busy Tone cadence auto learning/detection- Single Number / Account for multiple ports- Group hunting function- Digit Map- E.164 Numbering & ENUM support- Recordable greeting message- Hot-Line, Warm-Line support >Características de Chamada- Chamada em Espera, Atendimento- Encaminhamento - Incondicional, Ocupado, Não-atende- Transferência de Chamadas ? Assistida / Não-Assistida- Discagem Rápida, Re-Discagem, Chamadas em 3 vias (Necessário Servidor de Media) >Prevenção de DoS- Prevenção de ataque DOS baseados em TCP, UDP, IP, ICMP- Prevenção de SYN Flood, IP Spoofing, Ping of Death, Tear Drop DoS attacks >Gerenciamento / Configuração- Web-based & Telnet com autenticação- Configuração, port status, registration status, hardware/software information in web-based & Telnet UI- Mecanismo de Configuração IVR (Interactive Voice Response)- Botão Reset (factory default setting restoration)- Servidor de Auto Provisionamento Opcional (APS)- Suporte aSNMP v.1/v.2c- Teste de Ping >LEDs- Voice ports- WAN port- LAN ports- Run- Power- Alarm >Alimentação- Through AC 100V to 240V 50/60Hz input power adapter- DC 12V >Dimensões- DVG-6004S: 202 x 172 x 35 mm