DEVICE INTERFACES
+  2 RJ-11 FXS phone ports with polarity reversal detection and generation
+  1 RJ-11 PSTN lifeline phone port
+  1 RJ-45 10/100BASE-TX WAN port  with auto-MDI/MDIX
+  4 RJ-45 10/100BASE-TX LAN ports with auto-MDI/MDIX

GENERAL SIP FEATURES
+  Individual account per port or share account for all ports
+  Caller ID Delivery
+  Direct IP-to-IP Call without SIP Proxy
+  Digit Map and Phone Book
+  DNS SRV, SIP SRV
+  E.164 Numbering (with ENUM exception rule)
+  Group, Pick Up
+  Hot Line, Warm Line
+  Interactive Voice Response confguration (IVR)
+  Message Waiting Indication (SUBSCRIBE)
+  Visual Message Waiting Indication (SUBSCRIBE)
+  Music on hold
+  Outbound Proxy
+  SIP INFO
+  Three way conferencing (Ad Hoc mode, Media Server required)
+  Basic Call Features (Supplementary)
  -  ANONYMOUS CALL BLOCkING
  -  CALL BLOCk AND FILTER BY CALLER IP ADDRESS
  -  CALL FORWARDING - BUSY
  -  CALL FORWARDING - NO ANSWER
  -  CALL FORWARDING - UNCONDITIONAL
  -  CALL HISTORY (CALL STATUS)
  -  CALL HOLD
  -  CALL PICk UP
  -  CALL PARk AND RETRIEVE (PROXY SUPPORT)
  -  CALL TRANSFER (PROXY SUPPORT)
  -  CALL WAITING
  -  CALLING NAME AND TIME (FSk)
  -  DO NOT DISTURB
  -  CALLER ID BLOCkING

AUDIO FUNCTIONS
+  Adaptive Jitter Buffer
+  Adaptive Echo Canceller
+  Automatic voice/fax/data Detection and Switching
+  Auto Gain Control (AGC)
+  Codec: G711 μ/A-law, G729A/B/AB, G.723(6.3/5.3 kbps), G.726
+  Comfort Noise Generation (CNG)
+  DTMF Detection and Generation
+  In-band or Out of Band DTMF event
+  Packet Loss Concealment
+  Support voice/fax/modem (up to 33.6kbps) over IP
+  T.30 FAX bypass thought G.711
+  T.38 real time FAX up to 14.4 kbps
+  Voice Activity Detection (VAD)
+  Caller ID detection and generation: DTMF, FSk-BellCore, FSk-ETSI

CONFIGURATION/MANAGEMENT
+  Automatic Provisioning (exclusion from TR069/TR104 option)
+  WEB User Interface
+  TELNET User Interface
+  Confguration Backup and Restore through Web UI
+  Call History (Received Call/Disabled Call/Missed Call)
+  Flat Call Detail Record output (CDR)
+  Network Time Protocol time synchronization (Default by D-Link NTP)
+  Password Security (Web UI and TELNET)
+  Ping Test
+  Reset confguration to factory default
+  SNMP v2 (exclusion from TR069/TR104 option)
+  Static and Default routes
+  System status
+  TFTP/FTP/HTTP Client for frmware upgrade
+  TR069/TR104 Client support (optional)

WAN CONNECTION
+  Big Pond Client
+  DHCP Client
+  PPPoE Authentication by PAP/CHAP
+  PPTP Client
+  Static IP

QoS
+  DiffServ (DSCP) or ToS IP Precedence tagging (WAN)
+  LAN port rate limit
+  WAN port rate limit (in step of 64kbps)
+  WAN port priority queue: RTP frst
+  802.1Q and 802.1P Tagging (1 VID for VoIP traffc, 1 VID for LAN traffc)

NAT TRAVERSAL
+  STUN Client
+  DDNS Client
+  SIP and RTP Port Range Designation
+  Static Route

SECURITY
+  Built-in Firewall
+  IP Filtering
+  Port Filtering
+  MAC Filtering
+  Virtual Server
+  DMZ
+  Denial of Service Protection (DoS)
+  MD5 Authentication for SIP
+  Two privilege login control: Administrator and User
+  VPN Pass-through with Multiple Sessions (IPSec, PPTP, L2TP )

WIRELESS LAN
+  802.11 b/g standard
+  Supports up to 64 client associations
+  Automatic RF channel selection
+   Wireless security: access control based on MAC addresses, 64/128-bit WEP data encryption, WPA/WPA support

DIAGNOSTIC LEDS
+  Power
+  Provision/Alarm
+  Register
+  WAN Link/Activity
+  WLAN Link/Activity
+  LAN Link/Activity (4 Ports)
+  Phone(2 Ports)
+  Line

INPUT POWER
Through 100 to 240VAC, 50/60Hz, 1A external power adapter

OUTPUT POWER
12VDC, 1A

DIMENSIONS
193 x 118 x 31 mm

OPERATING TEMPERATURE
-10˚ to 40˚ C

STORAGE TEMPERATURE
-20˚ to 60˚ C (-4˚  to 140˚ F)

OPERATING HUMIDITY
10% to 90% RH

STORAGE HUMIDITY
5% to 95% RH

EMISSION (EMI) CERTIFICATIONS
+  FCC Class B
+  CE Class B

TELECOM CERTIFICATION
+  FCC PART 68
+  CE TBR21