----- Original Message -----
From: "Frank Bulk" <frnkblk at iname.com>
Except, by definition, jitter is ping-response (latency) deviation. In calculus terms, jitter is the derivative (change in rate) of latency.
I was assuming that jitter had to do with the sliding of packets around WRT strict isochronous positioning -- specifically, packets arriving out of sequence, because they are so late. That's not what jitter means in VoIP? :-) Cheers, -- jra -- Jay R. Ashworth Baylink jra at baylink.com Designer The Things I Think RFC 2100 Ashworth & Associates http://www.bcp38.info 2000 Land Rover DII St Petersburg FL USA BCP38: Ask For It By Name! +1 727 647 1274
On 06/21/2014 03:34 PM, Jay Ashworth wrote:
----- Original Message -----
From: "Frank Bulk" <frnkblk at iname.com>
Except, by definition, jitter is ping-response (latency) deviation. In calculus terms, jitter is the derivative (change in rate) of latency.
I was assuming that jitter had to do with the sliding of packets around WRT strict isochronous positioning -- specifically, packets arriving out of sequence, because they are so late.
That's not what jitter means in VoIP? :-)
AFIAK, jitter really does refer to the variation in the time delta of the arrival of RTP packets, regardless of whether this causes them to be out-of-order per se. -- Alex Balashov - Principal Evariste Systems LLC Tel: +1-678-954-0670 Web: http://www.evaristesys.com/, http://www.alexbalashov.com/ Please be kind to the English language: http://www.entrepreneur.com/article/232906
Have you tried turning off checksum offload on the pc? It could just be as simple as a lousy onboard chipset/driver since we're talking a desktop machine. -Blake On Sat, Jun 21, 2014 at 2:40 PM, Alex Balashov <abalashov at evaristesys.com> wrote:
On 06/21/2014 03:34 PM, Jay Ashworth wrote:
----- Original Message -----
From: "Frank Bulk" <frnkblk at iname.com>
Except, by definition, jitter is ping-response (latency) deviation. In calculus terms, jitter is the derivative (change in rate) of latency.
I was assuming that jitter had to do with the sliding of packets around WRT strict isochronous positioning -- specifically, packets arriving out of sequence, because they are so late.
That's not what jitter means in VoIP? :-)
AFIAK, jitter really does refer to the variation in the time delta of the arrival of RTP packets, regardless of whether this causes them to be out-of-order per se.
-- Alex Balashov - Principal Evariste Systems LLC Tel: +1-678-954-0670 Web: http://www.evaristesys.com/, http://www.alexbalashov.com/
Please be kind to the English language:
http://www.entrepreneur.com/article/232906
_______________________________________________ VoiceOps mailing list VoiceOps at voiceops.org https://puck.nether.net/mailman/listinfo/voiceops
----- Original Message -----
From: "Blake Dunlap" <ikiris at gmail.com>
Have you tried turning off checksum offload on the pc? It could just be as simple as a lousy onboard chipset/driver since we're talking a desktop machine.
No, cause I haven't the first clue where you do that on Win7. (Or, how it would suddenly get turned on, much less only for some packets...) Cheers, -- jra -- Jay R. Ashworth Baylink jra at baylink.com Designer The Things I Think RFC 2100 Ashworth & Associates http://www.bcp38.info 2000 Land Rover DII St Petersburg FL USA BCP38: Ask For It By Name! +1 727 647 1274
It's on by default both directions if supported. I've seen weird issues like this where the offloading causes the wrong checksum on very specific packets, is why I mention it. You can try turning it off in the properties of the network card. -Blake On Sun, Jun 22, 2014 at 12:29 PM, Jay Ashworth <jra at baylink.com> wrote:
----- Original Message -----
From: "Blake Dunlap" <ikiris at gmail.com>
Have you tried turning off checksum offload on the pc? It could just be as simple as a lousy onboard chipset/driver since we're talking a desktop machine.
No, cause I haven't the first clue where you do that on Win7.
(Or, how it would suddenly get turned on, much less only for some packets...)
Cheers, -- jra -- Jay R. Ashworth Baylink jra at baylink.com Designer The Things I Think RFC 2100 Ashworth & Associates http://www.bcp38.info 2000 Land Rover DII St Petersburg FL USA BCP38: Ask For It By Name! +1 727 647 1274 _______________________________________________ VoiceOps mailing list VoiceOps at voiceops.org https://puck.nether.net/mailman/listinfo/voiceops
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