/ip firewall mangle add action=mark-packet chain=postrouting disabled=no dst-address-list=VoIP new-packet-mark=voip_out out-interface=ether1 passthrough=no protocol=udp add action=mark-packet chain=prerouting disabled=no in-interface=ether1 new-packet-mark=voip_in passthrough=no protocol=udp src-ad...

1. - Someone has echo test at this level? http://www.youtube.com/watch?v=AF5AFca-16U test your configuration ie if the theory had really works? 2. - How would do for my rb750 time do not leave the audio on one side only, I have 10 problems per 100 calls, I was told it was because of the nat symmetri...

you can do 1:1 NAT, but it works statically, not in dynamic manner. also, UPnP is an option How good solution is UPnP? What other options do I have for the nat symetrico certain calls is not ruining my provider works with STUN server, I have dynamic ips and ports RTP are many variables over time, I...

STUN should not be enabled if SIP helper (SIP ALG) is also enabled in your router. STUN requires that the NAT device allow all traffic that is directed to a particular port, and that the traffic is forwarded to the client on the inside. This means that STUN only works with less-secure NATs, so-call...

I comment on NAT, because 100 calls have no audio 8 on one side, from what I read, would come to be a subject of Symmetric NAT, what do I know my provider, to implement NAT rules in the nat or filter ? As my VOIP provider uses large ranges of ports and ips, to implement the rule becomes non-functio...

Edit my post, I think now is more clear my query.

I comment on NAT, because 100 calls have no audio 8 on one side, from what I read, would come to be a subject of Symmetric NAT, what do I know my provider, to implement NAT rules in the nat or filter ? As my VOIP provider uses large ranges of ports and ips, to implement the rule becomes non-function...

Then they can reach an optimal configuration for VoIP and navigation to work for example in a network of 14 pcs and 2 VoIP phones 3 Mb ADSL downstream and upstream 400 K? . Or would be better to make a configuraación by Layer 7?

THx

As we could solve the NAT, jiter, any recommendation?

You could make a rb with symmetric nat, work as a router with nat: full cone nat?