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[asterisk-users] Require a Type 102 milliwatt number

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jnovack at stromberg-c...
Guest

Posted: Tue May 27, 2008 8:40 pm Post subject: [asterisk-users] Require a Type 102 milliwatt number

Tilghman Lesher wrote:

Quote:

<snip>

Quote:

Just another example of why the developers need to go to a basic Telco
school before reinventing the wheel ( sometimes incorrectly )

There is no need to insult the developers. Yes, there's a reason why the typical milliwatt application is not exactly 1000Hz. I think we've actually left the Milliwatt application the way that it is for historical reasons,ironically enough.

Not an insult.
No reason to be defensive either.
A very common problem in many fields of engineering is not being
educated in the history.
Learn about the past before attempting to be the future!

John Novack

--
Dog is my co-pilot

tilghman at mail.jeffa...
Guest

Posted: Tue May 27, 2008 10:40 pm Post subject: [asterisk-users] Require a Type 102 milliwatt number

On Tuesday 27 May 2008 20:40:18 John Novack wrote:

Quote:

Tilghman Lesher wrote:

Quote:

<snip>

Quote:

Just another example of why the developers need to go to a basic Telco
school before reinventing the wheel ( sometimes incorrectly )

There is no need to insult the developers. Yes, there's a reason why the
typical milliwatt application is not exactly 1000Hz. I think we've
actually left the Milliwatt application the way that it is for historical
reasons,ironically enough.

Not an insult.
No reason to be defensive either.
A very common problem in many fields of engineering is not being
educated in the history.
Learn about the past before attempting to be the future!

Suggesting that the developers needed to be educated assumed a lot
about the developers, and I don't think it's a stretch to consider that a
lobbed insult.

I'd have less of a problem if you had simply suggested why you thought
it should be changed, rather than announcing that you believed that the
developers were unqualified to write telecommunications software.

--
Tilghman

tzafrir.cohen at xorco...
Guest

Posted: Wed May 28, 2008 1:48 am Post subject: [asterisk-users] Require a Type 102 milliwatt number

On Tue, May 27, 2008 at 05:36:37PM -0500, Tilghman Lesher wrote:

Quote:

On Tuesday 27 May 2008 17:17:41 John Novack wrote:

Quote:

Jared Smith wrote:

Quote:

On Tue, 2008-05-27 at 16:42 -0400, Dean Collins wrote:

Quote:

How do you get asterisk to send a 102 Milliwatt signal?

The Milliwatt() dialplan application sends a 1000 Hz tone. (I'm still
waiting for the developers to agree that it should be 1004 Hz, but
that's another issue.)

1004Hz has been the Telco standard for many a year.

You can already do that with simple dialplan:

exten => 8114,1,Answer
exten => 8114,n,PlayTones(1004/1000)
exten => 8114,n,Wait(300)

Where can I find an up-to-date automatically-generated reference to
Asterisk applications and such?

Apart from running 'core show application PlayTones' on my laptop?

--
Tzafrir Cohen
icq#16849755 jabber:tzafrir.cohen at xorcom.com
+972-50-7952406 mailto:tzafrir.cohen at xorcom.com
http://www.xorcom.com iax:guest at local.xorcom.com/tzafrir

steve at geekinter.net
Guest

Posted: Wed May 28, 2008 3:16 am Post subject: [asterisk-users] Require a Type 102 milliwatt number

On 28 May 2008, at 04:40, Tilghman Lesher wrote:

Quote:

Suggesting that the developers needed to be educated assumed a lot
about the developers, and I don't think it's a stretch to consider
that a
lobbed insult.

I'd have less of a problem if you had simply suggested why you thought
it should be changed, rather than announcing that you believed that
the
developers were unqualified to write telecommunications software.

Someone is tetchy this morning.

aklists at mixdown.ca
Guest

Posted: Wed May 28, 2008 9:03 am Post subject: [asterisk-users] Require a Type 102 milliwatt number

On May 28, 2008 04:16:33 am Steven Howes wrote:

Quote:

Someone is tetchy this morning.

Not at all; I read that comment the exact same way Tilghman read it. It may
have been the poster's lack of communication skills, or the poster's not
having a solid grasp on the English language, or maybe the poster just feels
the best way to get something done is to harangue and insult and attempt to
bully people into action.

Either way, I think that most people who read "Just another example of why the
developers need to go back to basic Telco school before reinventing the wheel
(sometimes incorrectly)" would read it as a dismissive statement about the
developers.

-A.

jra at baylink.com
Guest

Posted: Wed May 28, 2008 9:24 am Post subject: [asterisk-users] Require a Type 102 milliwatt number

On Tue, May 27, 2008 at 10:40:34PM -0500, Tilghman Lesher wrote:

Quote:

I'd have less of a problem if you had simply suggested why you thought
it should be changed, rather than announcing that you believed that the
developers were unqualified to write telecommunications software.

A fairly reasonable argument can actually be made in that direction.

If you can't keep the tray tables clean of coffee stains, how can we
trust you to get the engine maintenance right? (-- Tom Peters)

Cheers,
-- jra
--
Jay R. Ashworth Baylink jra at baylink.com
Designer The Things I Think RFC 2100
Ashworth & Associates http://baylink.pitas.com '87 e24
St Petersburg FL USA http://photo.imageinc.us +1 727 647 1274

Those who cast the vote decide nothing.
Those who count the vote decide everything.
-- (Joseph Stalin)

jra at baylink.com
Guest

Posted: Wed May 28, 2008 9:26 am Post subject: [asterisk-users] Require a Type 102 milliwatt number

On Tue, May 27, 2008 at 08:42:58PM -0500, Lyle Giese wrote:

Quote:

The sampling rate on a T1 for a DS0 is 8kHz and 1kHz is a harmonic of 8kHz
and harmonic distortion can cause significant measurement errors. So early
on engineers tuned the test frequency to be slightly off to keep harmonic
distortion to a minimum when taking loss measurements.

See? There's a really *good* reason it's not 1kHz, exactly.

So, having it be exactly 1kHz can make it useless (actually, worse than
useless -- actively harmful) for precisely the purpose you need it for:
measuring things on T-1s.

Cheers,
-- jra
--
Jay R. Ashworth Baylink jra at baylink.com
Designer The Things I Think RFC 2100
Ashworth & Associates http://baylink.pitas.com '87 e24
St Petersburg FL USA http://photo.imageinc.us +1 727 647 1274

Those who cast the vote decide nothing.
Those who count the vote decide everything.
-- (Joseph Stalin)

drew at oanda.com
Guest

Posted: Thu May 29, 2008 8:07 am Post subject: [asterisk-users] Require a Type 102 milliwatt number

Jay R. Ashworth wrote:

Quote:

On Tue, May 27, 2008 at 10:40:34PM -0500, Tilghman Lesher wrote:

Quote:

Ooooooh! A dreadful quote!

Good engineers don't care about "tray tables", they care about engine
maintenance. They put the effort into what they care about, they don't
waste it on a manager's shallow perception of reality!

regards,

Drew

PS. I guess this is why I'm still a lowly peon.
--
Drew Gibson

Systems Administrator
OANDA Corporation
www.oanda.com

russell at digium.com
Guest

Posted: Thu May 29, 2008 8:22 am Post subject: [asterisk-users] Require a Type 102 milliwatt number

On May 29, 2008, at 8:07 AM, Drew Gibson wrote:

Quote:

Jay R. Ashworth wrote:

Quote:

On Tue, May 27, 2008 at 10:40:34PM -0500, Tilghman Lesher wrote:

Quote:

I'd have less of a problem if you had simply suggested why you
thought
it should be changed, rather than announcing that you believed
that the
developers were unqualified to write telecommunications software.

I can't believe this conversation has degraded to this point. How
ridiculous ...

Milliwatt in Asterisk is incorrect. Tilghman pointed out the
available workaround, which is to use Playtones.

Fixing the source is trivial! All we have to do is make Milliwatt use
Playtones internally. It will take a little bit more CPU resources,
because it is generating the tone on the fly instead of reading it
from memory, but who cares?

This change will take me about 10 minutes. I'll do it today. If you
want to make sure I don't forget, put it on bugs.digium.com to be safe.

Now, please stop the insanity.

--
Russell Bryant
Senior Software Engineer
Open Source Team Lead
Digium, Inc.

steveu at coppice.org
Guest

Posted: Thu May 29, 2008 9:48 am Post subject: [asterisk-users] Require a Type 102 milliwatt number

Drew Gibson wrote:

Quote:

Jay R. Ashworth wrote:

Quote:

On Tue, May 27, 2008 at 10:40:34PM -0500, Tilghman Lesher wrote:

Quote:

Engineers love saying that. Then when they asked to fly on a rather
grubby plane belonging to an airline with a first class safety record
(e.g. Indian Airlines - I think they have their new planes delivered
looking filthy) they get twitchy. Smile

Steve

stotaro at totarotechn...
Guest

Posted: Thu May 29, 2008 10:02 am Post subject: [asterisk-users] Require a Type 102 milliwatt number

On Thu, May 29, 2008 at 10:48 AM, Steve Underwood <steveu at coppice.org> wrote:

Quote:

Drew Gibson wrote:

Quote:

Jay R. Ashworth wrote:

Quote:

On Tue, May 27, 2008 at 10:40:34PM -0500, Tilghman Lesher wrote:

Quote:

Steve

On one of my last domestic flights, the stewardesses could not get one
overhead bin to close. She called an engineer who looked at it a bit,
slammed it a few times, only to pop back open. He pulled out his
trusty duct tape, applied liberally and it stayed shut the entire
flight.

One part of me was thinking "good, at least we don't have to switch
planes or be delayed" while the other was thinking "WTF?!?"

Thanks,
Steve Totaro

russell at digium.com
Guest

Posted: Thu May 29, 2008 12:47 pm Post subject: [asterisk-users] Require a Type 102 milliwatt number

Russell Bryant wrote:

Quote:

Milliwatt in Asterisk is incorrect. Tilghman pointed out the
available workaround, which is to use Playtones.

Fixing the source is trivial! All we have to do is make Milliwatt use
Playtones internally.

http://lists.digium.com/pipermail/asterisk-commits/2008-May/023058.html

--
Russell Bryant
Senior Software Engineer
Open Source Team Lead
Digium, Inc.

sherwood.mcgowan at gm...
Guest

Posted: Thu May 29, 2008 12:55 pm Post subject: [asterisk-users] Require a Type 102 milliwatt number

Russell Bryant wrote:

Quote:

Russell Bryant wrote:

Quote:

http://lists.digium.com/pipermail/asterisk-commits/2008-May/023058.html

Hey thanks Russell Smile

asterisk.org at sedwar...
Guest

Posted: Thu May 29, 2008 1:27 pm Post subject: [asterisk-users] Require a Type 102 milliwatt number

On Thu, 29 May 2008, Russell Bryant wrote:

Quote:

Russell Bryant wrote:

Quote:

http://lists.digium.com/pipermail/asterisk-commits/2008-May/023058.html

+ if (!(wait_app = pbx_findapp("Wait"))) {
+ ast_log(LOG_ERROR, "The Playtones application is required to run Milliwatt()\n");
+ goto exit_app;
+ }

Is the "wait" application part of the "playtones" application in 1.4?

Thanks in advance,
------------------------------------------------------------------------
Steve Edwards sedwards at sedwards.com Voice: +1-760-468-3867 PST
Newline Fax: +1-760-731-3000

russell at digium.com
Guest

Posted: Thu May 29, 2008 1:40 pm Post subject: [asterisk-users] Require a Type 102 milliwatt number

Steve Edwards wrote:

Quote:

That was a silly copy/paste error that was fixed in a commit immediately after.
Thanks for pointing it out, though.

--
Russell Bryant
Senior Software Engineer
Open Source Team Lead
Digium, Inc.

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