Posted:
Sat Sep 10, 2005 4:08 pm Post subject: Choppy calls with Wrt54gp2, Terayon TJ715, Adelphia
The caller's voice is choppy and arrives in "slow motion" for about 5 seconds, at which time, real time voice resumes (losing 5 seconds of actual voice transmission).
The problem occurs on each call, about a minute into the call, and repeats roughly every minute thereafter.
How do I troubleshoot whether the problem source is modem, router, ISP or even Vonage?
Here's my setup:
Location: Studio City, California
ISP: Adelphia Cable internet
Vonage Speed Tests:
Download 761,952 bps
Upload 790,328 bps
QOS 88%
RTT 55 ms
MaxPause 110 ms
Codec G.711 (PCM at 64kbps,
20ms RTP payload,
80kbps IP BW)
Round-Trip
Latency 190 ms
Packet Discards 0.8%
Packet Loss 0.0%
Loss Periods Min: 20 ms
Avg: 20 ms
Max: 40 ms
Random Loss
Jitter Min: 0 ms
Avg: 7 ms
Max: 40 ms
Signaling Quality Post-Dial Delay 141 ms
Call Setup Time 141 ms
Media Delay 297 ms
MOS Analysis FROM Boston To You
Media Quality MOS 4.4 / 5.0
(Best with G.711 is 4.4)
Codec G.711 (PCM at 64kbps,
20ms RTP payload,
80kbps IP BW)
Round-Trip
Latency 190 ms
Packet Discards 0.5%
Packet Loss 0.0%
Loss Periods Min: 80 ms
Avg: 80 ms
Max: 80 ms
Burst Loss
Jitter Min: 4 ms
Avg: 7 ms
Max: 58 ms
Signaling Quality Post-Pickup Delay 132 ms
Call Setup Time 123 ms
Media Delay 166 ms
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