On Fri, Jan 05, 2007 at 05:37:22PM -0500, Allen Casteran wrote: > Mike wrote: > >You're quite right, I typed before thinking. Upload is the problem > >anyways, since it usually (in homes) uses much more limited bandwidth > >than downloading does. > > > >No answer to my question though: How do you people handle QoS without > >relying on the phones to do that? I'd like a box that can be purchased > >and installed easily (Linksys type of product) > > > > Mike, > > Unless your ISP specifically supports QOS on your internet connection > there is NO QOS beyond your router. Only within your network will the > QOS be effective. Once the packets go through your router all control is > lost. :) > > This also means that you have little control over the priority of the > traffic coming through the router's WAN port. The most you could do with > QOS in this case is to limit outbound traffic from your PC if it would > interfere with a voice call. The same is not true for the return (ie > inbound) packets.
True, but for many people the upstream path is the biggest, and sometimes the only bottleneck in their internet traffic, especially to a good termination provider that has not underprovisioned. So this is the one place QoS can make a difference. For downstream, it can be an issue. Though in theory a clever router can notice the amount of high-priority RTP traffic that is going through, and then cause incoming TCP traffic to back off to leave room for the RTP traffic. I don't know if the cheap boxes do this. The D-link DI-102 qos box literature seems to talk mostly about upstream so I don't think it does this. On the other hand, I tested my wrt54g with qos firmware on, and while downloading at full speed I detected no dropped packets in incoming voice, so perhaps it does that. _______________________________________________ --Bandwidth and Colocation provided by Easynews.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
