Download Firmware Draytek Vigor 2820/n/Vn 3.3.1.2

Draytek has for his Vigor 2820-, Vigor 2820n and Vigor 2820vn routers released new firmware with 3.3.1.2 as the version number. These routers are suitable for passing ADSL2, ADSL2+, cable and VoIP connections. The list of changes includes improvements for voip and 3g, and looks like this:

New Features:

• Support ISDN function

improvement:

• VOIP:
  • Add protect function for sending caller-ID with DTMF type for the character used is non-standard
  • Add protection for SIP parser to prevent malicious UDP 5060 port attack
  • Add an enable/disable check box in VOIP regional
  • Add a telnet cmd “dtmftonepwr” for adjusting the power level of the DTMF tone sending PSTN switch
  • Support “ALL” interface in call barring
  • Support call pickup (when act as a caller)
  • Improved: Danube DSP FXS on/offhook detection by using MPS driver
  • Improved: Stability for FXO Port or PSTN Port ring detection
  • Corrected: wrong RFC-2833 packet was sent out
  • Corrected: SIP SUBSCRIBE message missing “Contact” header
  • Corrected: VoIP cannot change codec (driver layer)
  • Corrected: when a phone call is rejected (486 message), it still plays ring back tone
  • Corrected: DND exception list malfunctioning
  • Improved: SIP/SDP parser to handle complicated SDP content.
  • Improved: VOIP stability
  • Improved: scenario for SIP ALG code for SIP client on WAN side registered to SIP server on LAN side
  • Improved: Digit-Map function can use different prefix length but start with same digit rule.
  • Fixed: Problem of VoIP PSTN loopthrough in Phonebook and Digit Map
• 3G:
  • Improved: 3G reconnect stability, backup mode
  • Corrected: unable to fetch 3G signal strength response
  • Support SonyEricsson MD300 modem. Skip CSQ signal check
  • Support Sierra 885/888 modem, DET-US3G5 modem, Cmotech D-50, and D-Link DWM-652 modem
• wireless:
  • Set WPS client’s default MAC address as 00-00-00-00-00-00 to avoid WUI display error
  • Fixed: Problem that wireless clients are unable to get IP address from DHCP
• Other:
  • Corrected: IM-P2P can not block Vagaa application
  • Corrected: WAN2 status not compatible with syslog utility 4.X
  • Corrected: DDNS use WAN2 first fail.
  • Corrected: syslog can’t sent out via VPN tunnel
  • Corrected: ways of handling DNS port reply packet (a non DNS answer packet)
  • Corrected: IM-P2P mail alert malfunctions
  • Improved: VPN mechanism to avoid sending unnecessary DPD echo/reply
  • Improved: FTP server (active mode upload)
  • Improved: NAT loop back for SSH and FTP service
  • Improved: handle protocol equal to zero packets
  • Improved: PPTP WAN mechanism
  • Improved: telnet command for flush nat portmaps; it maybe useful for some conditions portmapsetting –f
  • Fixed: access control function can’t be disabled in Wireless LAN>>Access Control
  • Fixed: authentication failed with radius server: Vasco Middleware
  • Modify daylight saving table for New Zealand
  • Make telnet Call-log related command more robust to prevent reboot
  • Rearrange the telnet command with alphabet order