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Vonage A ping measures the round trip time to an internet host and back so the time to from
A ping measures the round trip time to an internet host and back so the time to from you to that host is roughly half the time ping reports. This is called latency: the time is takes to get data from you to the destination. For a voice over IP service (such as Vonage) you want your one-way latency to be as low as possible but anything under 75-100ms should be fine as that shouldn't introduce noticeable delay to the audio.
However, the biggest problems typically are not latency but jitter. Jitter is the variation is latency from one packet to another. Your telephone adapter can adequately compensate for jitter up to about 40ms or so, anything higher is going to cause packet discards. Those are packets that reach the other end but are received too late.
As for how to setup the QoS in DD-WRT... port is WAN, packet scheduler HTB, optimize for gaming off. The reason that it needs to know your uplink and downlink speeds is to know what bandwidth is available and when it needs to kick in the prioritization and limit the throughput of lower priority traffic. The reason that I suggest to set the service priority verses netmask or MAC is that should you ever change your Vonage devices (replace one, add another) or the IP address changes (as it does with dynamically assigned ones), you don't need to adjust the QoS rules. The voice traffic will always be rtp while the other identifiers may change. Set the priority to premium.
Read The Full Thread: Poor Call Quality & Sporadic Issues with Business Lines
• Hi,
I was hoping someone on here might be able to lend me some assistance. I
• First, I am not completely familiar with PingPlotter but I'm going to assume those
• Yup, I believe that's what those #'s are (although I'm not that familiar with the
• Also, what priority should I set the RTP protocol too (i.e. premium, exempt, express,
• Trekloger - thanks for all the info. So, if the jitter is what's causing the issue,
• So after making the changes, it seems as if the Vonage adapter that is wired seems
trekologer posted "A ping measures the round trip time to an internet host and back so the time to from" on 07/20/2009 |
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