Roteador DrayTek Vigor2820Vn (Modem 3G, ADSL 2/2 + Security Firewall, VoiP, Wireless N)

ADSL2/2+ Security Router Support Smart Monitor 2nd WAN port (Ethernet) for policy-based load-balancing or fail-over Support for mobile 3.5G / HSDPA via USB modem CSM (Content Security Management) for Web content access control USB 2.0 port for network printer, 3.5G / HSDPA  mobile Built-in VoIP facilities enable to deploy cost-effective IP telephone infrastructure Flexible bandwidth management to optimize bandwidth usage Object-based firewall preventing external attacks / easing policy settings Hardware-based VPN platform for high performance remote data access 802.11n (Draft-n) Wireless LAN  1. ADSL Compatibility ANSI T1.413 Issue2 ITU-T G.992.1 G.dmt ITU-T G.992.2 G.lite ITU-T G.992.3 ADSL2 G.dmt.bis ITU-T G.992.5 ADSL2+ Multi-PVC Annex L (READSL) Annex M 2. ATM Protocols (DSL) RFC-2684 / RFC-1483 Multiple Protocol over AAL5 RFC-2516 PPP over Ethernet RFC-2364 PPP over AAL5 PPPoE Pass Through LAN / WLAN PPPoE / PPPoA Relay Transparent Bridge for MPoA 3 Dual-WAN Outbound Policy-based Load-balance BoD (Bandwidth On Demand) WAN Connection Fail-over 4. VoIP (Voice over IP) Protocol : SIPv2 (RFC-3261) / RTP / RTCP 12 SIP Registrars G.168 Line Echo-cancellation Automatic Gain Control Jitter Buffer (180ms) Voice Codec : G.711 A/µ Law G.723.1 G.726 G.729 A / B VAD / CNG iLBC * DTMF Tone : In Band Out Band (RFC-2833) SIP Info Supplemental Services : Internal Call Call Hold / Retrieve / Waiting Call Waiting with Caller ID Call Transfer Call Forwarding (Always / Busy / No Answer) Call Barring (Incoming / Outgoing) DND (Do Not Disturb) MWI (Message Waiting Indicator) (RFC-3842) Hotline Dial Plan : Phone Book Digit Map 5. Wireless Access Point IEEE802.11n Compliant (Draft 2.0) Wireless Client List Wireless LAN Isolation 64 / 128 bit WEP WPA / WPA2 Hidden SSID Mac Address Access Control Access Point Discovery Multiple SSID Wireless Rate-control WMM (Wi-Fi Multimedia) WDS (Wireless Distribution System) 802.1x Authentication 6. VPN Up to 32 VPN Tunnels Protocol : PPTP IPSec L2TP L2TP over IPSec Encryption : MPPE Hardware-based AES DES 3DES Authentication Hardware-based MD5 SHA-1 IKE Authentication : Pre-shared Key Digital Signature (X.509) LAN-to-LAN , Teleworker-to-LAN NAT-Traversal (NAT-T) Dead Peer Detection (DPD) VPN Pass-through 7. Firewall Policy-based Firewall CSM (Content Security Management) for IM / P2P Application and URL / Web Content Filter Multi-NAT / DMZ Host / Port-Redirection / Open Port SPI (Stateful Packet Inspection) (Flow Track) DoS / DDoS Prevention IP address Anti-spoofing E-Mail Alert and Logging via Syslog IP and MAC Binding 8. Bandwidth Management QoS : Guarantee Bandwidth for VoIP Class-based Bandwidth Guarantee by User-Defined Traffic Categories DiffServ Code Point Classifying 4-level Priority for Each Direction (Inbound / Outbound) Bandwidth Borrowed Bandwidth / Session limitation 9. WAN Protocol (WAN2) DHCP Client Static IP PPPoE PPTP BPA L2TP * 10. Network Feature Port-based VLAN DNS Cache / Proxy DHCP Client / Relay / Server IGMP Proxy Dynamic DNS NTP Client Call Scheduling RADIUS Client UPnP Routing Protocol : Static Routing RIP V2 11. USB 3G USB Modem (3G only can act as WAN2) USB Printer 12. Network Management Web-based User Interface (HTTP / HTTPS) Quick Start Wizard CLI (Command Line Interface , Telnet / SSH) Administration Access Control Configuration Backup / Restore Built-in Diagnostic Function Firmware Upgrade via TFTP / FTP / HTTP / TR-069 Logging via Syslog SNMP Management MIB-II TR-069 TR-104 13. Support Smart Monitor Up to 30 PCs * Firmware Upgradeable