TELECOM Digest OnLine - Sorted: Re: Vonage Voice Quality Getting Worse?

Re: Vonage Voice Quality Getting Worse?

Flatus Ohlfahrt (flatus@militaryretired.us)
13 Dec 2004 19:23:03 GMT

On Mon, 13 Dec 2004 02:24:47 GMT, Mark Roberts wrote in
news:telecom23.595.9@telecom-digest.org:

> John R Levine <johnl@iecc.com> had written:

>> Have other people had voice quality problems with Vonage?

> Usually, no. When it does happen, it seems to happen with
> calls to certain rural areas (one in Missouri, in
> particular). A second try at placing the calls usually
> clears them up.

> ATA-186 behind a Linksys router with QoS enabled.

In August a kind soul reported that there is a problem with the stock
firmware supplied with Vonage's ATA-186s. I emailed Vonage tech
support and they flashed my ATA with an update that solved the
problem. I also made sure that QoS was enabled for my ethernet cards,
etc. Here is the message that was posted in August:

On Sat, 21 Aug 2004 06:34:56 GMT, Cheetoh wrote in
news:10idr89jr1ev410@corp.supernews.com:

> So it turns out that the current firmware Vonage is using
> on the Cisco ATA186's has a bug that puts a 0x0
> value in the IP Precedence field, so instead of sending
> voip bearer packets with an IP Precendence 5 they
> are sent with 0, like all data. I have worked with them
> and they have loaded a test image and it works
> like a champ now and my LLQ is working great in case any
> one else is trying to do this...

> LLQ-router# show voice queuing

> Ethernet1

> Service-policy output: shape

> Class-map: class-default (match-any)
> 365625 packets, 66899306 bytes
> 30 second offered rate 591000 bps, drop rate 0 bps
> Match: any
> Traffic Shaping
> Target/Average Byte Sustain Excess
> Interval
> Increment
> Rate Limit bits/int bits/int (ms)
> (bytes)
> 1100000/1100000 6600 26400 26400 24
> 3300

> Adapt Queue Packets Bytes Packets
> Bytes
> Shaping
> Active Depth Delayed
> Delayed
> Active
> - 3 361289 66615027 11338
> 13704219 yes

> Service-policy : LLQ

> Class-map: call-setup (match-all)
> 5675 packets, 1804013 bytes
> 30 second offered rate 0 bps, drop rate 0 bps
> Match: ip precedence 3
> Queueing
> Output Queue: Conversation 73
> Bandwidth 5 (%)
> Bandwidth 55 (kbps) Max Threshold 64 (packets)
> (pkts matched/bytes matched) 25/8990
> (depth/total drops/no-buffer drops) 0/0/0

> Class-map: voice (match-all)
> 129981 packets, 18261798 bytes
> 30 second offered rate 0 bps, drop rate 0 bps
> Match: ip precedence 5
> Queueing
> Strict Priority
> Output Queue: Conversation 72
> Bandwidth 165 (kbps) Burst 4125 (Bytes)
> (pkts matched/bytes matched) 1349/279958
> (total drops/bytes drops) 0/0

> Class-map: class-default (match-any)
> 229969 packets, 46833495 bytes
> 30 second offered rate 592000 bps, drop rate 0
> bps Match: any
> Queueing
> Flow Based Fair Queueing
> Maximum Number of Hashed Queues 64
> (total queued/total drops/no-buffer drops) 3/0/0

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