The Linksys RV082 is a 10/100 8-Port VPN Router
A unique feature for a router in this price range (approx US $300) is it has 2 WAN interfaces which means redundant internet connections. As of firmware version 1.3.3.5, it supports two types of QOS under "System Management" -> "Bandwidth Management", the first is a prioritization based on port and the second, a "flow control" guaranteeing minimum bandwidth.
Linksys Product Page
Our experience has been that it is essential to set the WAN MTU manually to 1492. The default settings do not work well with Asterisk and SIP. We had numerous problems with dropped calls and phones becoming "unreachable" for minutes at a time until this change was made.
A unique feature for a router in this price range (approx US $300) is it has 2 WAN interfaces which means redundant internet connections. As of firmware version 1.3.3.5, it supports two types of QOS under "System Management" -> "Bandwidth Management", the first is a prioritization based on port and the second, a "flow control" guaranteeing minimum bandwidth.
Linksys Product Page
Critical Configuration Setting
Our experience has been that it is essential to set the WAN MTU manually to 1492. The default settings do not work well with Asterisk and SIP. We had numerous problems with dropped calls and phones becoming "unreachable" for minutes at a time until this change was made.

Comments
333VPN for VoIP Blocking
Currently I am using the VGCP, a new solution to solve the VoIP Blocking issue. Following is theirs website:
http://www.speed-voip.com/index-36.html
If any of you have interested, you may try to use it to solve your VoIP Blocking problems. Thanks.
Andy
andywong-01@hotmail.com