Release Note for Vigor2820 Series Firmware Version: 3.3.7.3 Built Date: October 03, 2012 Applied Models: Vigor2820/2820V/Vigor2820n/Vigor2820Vn/Vigor2820VS/ Vigor2820VSn For the users who still use Firmware Version 3.3.5 (and before): Because the functions and WUI on Firmware Version 3.3.5 (and before) are different with Firmware Version 3.3.7.2 and later, we strongly suggest you to download the file (V3.3.5.2) from the following FTP first. ftp://ftp.draytek.com/Vigor2820/Firmware/ Upgrade your router with Version 3.3.5.2 first, and last, upgrade the router with Version 3.3.7.2. New Features z None Improvement [VoIP] z Corrected: Solve twenty seven compliance issues for SIP RFC3261. z Corrected: An issue of G.7.11 compliance for FAX. [3G Connection] z Improved: Support AnyDATA ADU-500A modem; ZTE MF190J[19D2:1542->1544] [Firewall] z Improved: Corrected a buffer full issue when decoding WCF reply z Improved: Corrected WCF and anti-spam issues [OTHERS] z Corrected: NAT issue regarding to H323 passing through NAT. z Corrected: Corrected ADSL TX/RX (transmission/receiving) bytes counts. z Corrected: Display error for secondary DNS IP in online status page. z Corrected: PVC WAN can not receive fragmented packet. z Improved: SNMP can show model name, firmware version and build date in sysDescr(OID = .1.3.6.1.2.1.1.1.0). z Improved: IGMP Query interval can be adjusted by using a telnet command. z Improved: Firmware for Russia can only accept MPPE 40 bits. z Improved: Disable QoS by default for non-VoIP models. z Improved: Support DNS-SRV query/response from/to LAN hosts. z Improved: Add Application>> SMS back. z Improved: Lease time in LAN DHCP Server is configurable. z Improved: DHCP client information will be stored in syslog