RE: [Asterisk-Users] Jitter over Sat

2004-09-02 Thread steve


On Thu, 2 Sep 2004, Storm D. J. Petersen wrote:

 Hi,
 
 Thanks, I'll try to do a GSM Bridge call today.  I understand your answer
 for why voicemail - as in it does not require realtime processing, but what
 about the echo back test?  When I use echo back tests on other * servers or
 FWD I sound perfect - less some latency.  Surely echo back is in realtime?
 

Well - the echo app on the other side just sends back what it receives, 
frame by frame, as and when the frames turn up.

So perhaps your end has sufficient jitter buffer to compensate, but the 
other end does not?

Steve

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Re: [Asterisk-Users] Jitter over Sat

2004-09-01 Thread steve


On Tue, 31 Aug 2004, Storm D. J. Petersen wrote:

 I have a problem with jitter over a 2mb up 1mb down satellite connection.  I
 call my friend over the satellite - I call perfect but they cannot make out
 a word I say. However if I leave him voicemail on his asterisk box, it
 records my voice perfect.  I have this problem when calling other people as
 well.

It sounds like you just don't have enough throughput in the one direction.  
Voicemail is fine because it doesn't need realtime capacty - the voice 
frames arriving from your side go into the captured file as they arrive, 
doesn't matter if your 10 second message takes 20 seconds to arrive...

You could try using a lower bandwidth codec like GSM if you aren't 
already.

Steve

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Re: [Asterisk-Users] Jitter over Sat

2004-09-01 Thread Andrew Kohlsmith
On Wednesday 01 September 2004 02:16, [EMAIL PROTECTED] wrote:
 It sounds like you just don't have enough throughput in the one direction.
 Voicemail is fine because it doesn't need realtime capacty - the voice
 frames arriving from your side go into the captured file as they arrive,
 doesn't matter if your 10 second message takes 20 seconds to arrive...

Whoa...  It makes perfect sense but MAN that would be a bear to diagnose!

Little tips like this are hard-won by those who discover them.  :-)

-A.
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RE: [Asterisk-Users] Jitter over Sat

2004-08-31 Thread Storm D. J. Petersen
Opps, at 3am I make stupid editing mistakes.  Should read:

I have a problem with jitter over a 2mb up 1mb down satellite connection.  I
call my friend over the satellite - **I can hear him perfect**, but he
cannot make out
a word I say.  However if I leave him voicemail on his asterisk box, it
records my voice perfect.  I have this problem when calling other people as
well.


 Storm D. J. Petersen
 mailto:[EMAIL PROTECTED]


-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Storm D. J.
Petersen
Sent: Tuesday, August 31, 2004 3:20 AM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: [Asterisk-Users] Jitter over Sat

Hello,

I have a problem with jitter over a 2mb up 1mb down satellite connection.  I
call my friend over the satellite - I call perfect but they cannot make out
a word I say. However if I leave him voicemail on his asterisk box, it
records my voice perfect.  I have this problem when calling other people as
well.

This is my setup:

[my Grandstream]- [my * PBX]- [sat]- [friends * PBX]- [friends Supra
Phone] (or any other device)

I've also tried:
[my Grandstream]- [sat]- [friends * PBX]- [friends Supra Phone] (or any
other device)

and:

[my Grandstream]- [my * PBX]- [sat]- [friends Supra Phone] (or any other
device)


I've tried all combination of using SIP and IAX2 connections to bridge the
calls using codecs ULAW and iLBC with all the same result.

When I call my friends ECHO BACK TEST, I sound perfect (with a bit of
latency).

Anyone have some suggestions?

Thanks kindly,
S.

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Re: [Asterisk-Users] Jitter over Sat

2004-08-31 Thread Martin Mielke
Hi there,
this is just a me too... well, not exactly. I get jitter when trying 
to make SIP calls through Asterisk using a GPRS connection... can this 
be done actually?

TIA,
Martin
Storm D. J. Petersen wrote:
Hello,
I have a problem with jitter over a 2mb up 1mb down satellite connection.  I
call my friend over the satellite - I call perfect but they cannot make out
a word I say. However if I leave him voicemail on his asterisk box, it
records my voice perfect.  I have this problem when calling other people as
well.
This is my setup:
[my Grandstream]- [my * PBX]- [sat]- [friends * PBX]- [friends Supra
Phone] (or any other device)
I've also tried:
[my Grandstream]- [sat]- [friends * PBX]- [friends Supra Phone] (or any
other device)
and:
[my Grandstream]- [my * PBX]- [sat]- [friends Supra Phone] (or any other
device)
I've tried all combination of using SIP and IAX2 connections to bridge the
calls using codecs ULAW and iLBC with all the same result.
When I call my friends ECHO BACK TEST, I sound perfect (with a bit of
latency).
Anyone have some suggestions?
Thanks kindly,
S.
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Re: [Asterisk-Users] Jitter over Sat

2004-08-31 Thread Bob Goddard
On Tuesday 31 August 2004 11:36, Martin Mielke wrote:
 Hi there,

 this is just a me too... well, not exactly. I get jitter when trying
 to make SIP calls through Asterisk using a GPRS connection... can this
 be done actually?
[...]

Yes, we've done it over Vodaphone (I think). The lag,
about 1.5s in some tests weve done, can really kill it.


B
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RE: [Asterisk-Users] Jitter over Sat

2004-08-31 Thread Storm D. J. Petersen
I don't mind latency ... it's the garbage jitter where no one can understand
a word.

Interestingly enough if I do this it works fine:

[grandstream 1]- [sat]- [pbx in mothers house]
[grandstream 2]- [sat] -/

where the grandstream phones are side by side.

S.


-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Bob Goddard
Sent: Tuesday, August 31, 2004 5:10 AM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [Asterisk-Users] Jitter over Sat

On Tuesday 31 August 2004 11:36, Martin Mielke wrote:
 Hi there,

 this is just a me too... well, not exactly. I get jitter when trying
 to make SIP calls through Asterisk using a GPRS connection... can this
 be done actually?
[...]

Yes, we've done it over Vodaphone (I think). The lag,
about 1.5s in some tests weve done, can really kill it.


B
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