[asterisk-biz] G.722 VoIP Providers

Sergey b2b at ipstyle.org
Thu Apr 12 13:13:35 MST 2007


Hello, Craig.

You wrote 12.04.2007, 16:29:01:

> "... the frequency of voice is not among the most quoted VoIP problems.
> Those are rather jitter (poor synchronisation of voice packets arriving) and
> no voice at all or packet loss. Actually almost all PSTNs use the 8kHz
> frequency that no one has ever complained about before, so necessity for the
> HD voice quality is somewhat questionable."

In 1981, Bill Gates said that "640 k ought to be enough for anyone"
Sounds similar, huh?

> http://news.asteriskguru.com/2/4461/2007/3/7/The_truth_about_High_Definition
> _VoIP

> Well, the pitch "HD Voice" does have a certain marketing appeal....even if
> there's not that much real benefit.

> Craig

> -----Original Message-----
> From: asterisk-biz-bounces at lists.digium.com
> [mailto:asterisk-biz-bounces at lists.digium.com] On Behalf Of Mike Hammett
> Sent: Thursday, 12 April 2007 3:19 AM
> To: 'Commercial and Business-Oriented Asterisk Discussion'
> Subject: RE: [asterisk-biz] G.722 VoIP Providers

> No.  PSTN is 8 kHz and 8 bit.  It cannot be 722.

> --Mike



> -----Original Message-----
> From: asterisk-biz-bounces at lists.digium.com
> [mailto:asterisk-biz-bounces at lists.digium.com] On Behalf Of Andrew Joakimsen
> Sent: Tuesday, April 10, 2007 11:08 PM
> To: Commercial and Business-Oriented Asterisk Discussion
> Subject: Re: [asterisk-biz] G.722 VoIP Providers

> Is there any PSTN provider in the world that can offer you say a PRI which
> uses G722

> On 4/9/07, Guilherme Ges <glwgoes at gmail.com> wrote:
>> Actually the CODEC name is ITU-T G.722.2 which is identical to the 
>> GSM-AMR Wideband CODEC. The HD part of the CODEC is its sampling rate 
>> at 16 kHz, where the "normal" CODECs samples at 8 kHz.
>>
>> On 4/2/07, Mike Hammett <asterisk-biz at ics-il.net> wrote:
>> >
>> >
>> >
>> > Better audio quality.  I believe it samples at 128 kbit/s (I haven't 
>> > looked at it in a while to know details) and compresses into 64 
>> > kbit/s, resulting in a higher audio quality while not suffering a
> bandwidth hit.
>> >
>> >
>> >
>> > --Mike
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> > From: asterisk-biz-bounces at lists.digium.com
>> > [mailto:asterisk-biz-bounces at lists.digium.com] On Behalf Of Brian 
>> > Fertig
>> > Sent: Monday, April 02, 2007 12:39 PM
>> >
>> > To: 'Commercial and Business-Oriented Asterisk Discussion'
>> > Subject: RE: [asterisk-biz] G.722 VoIP Providers
>> >
>> > To: 'Commercial and Business-Oriented Asterisk Discussion'
>> > Subject: RE: [asterisk-biz] G.722 VoIP Providers
>> >
>> >
>> >
>> >
>> >
>> > Pardon my ignorance, but what is the big deal about g722?  I haven't 
>> > read up much on it.
>> >
>> >
>> >
>> >
>> > --
>> >
>> > ........::::::::::.........
>> >
>> > Brian Fertig
>> >
>> > Director of Engineering
>> >
>> > Molten, Inc.
>> >
>> > Delaware Office
>> >
>> > Office 800.418.4380 x 160
>> >
>> > Direct 302.338.9601
>> >
>> >
>> >
>> >
>> >
>> > From: asterisk-biz-bounces at lists.digium.com
>> > [mailto:asterisk-biz-bounces at lists.digium.com] On Behalf Of Mike 
>> > Hammett
>> > Sent: Monday, April 02, 2007 1:25 PM
>> > To: 'Commercial and Business-Oriented Asterisk Discussion'
>> > Subject: RE: [asterisk-biz] G.722 VoIP Providers
>> >
>> >
>> >
>> > This is something we should strive for as this is most definitely 
>> > something the PSTN is unable to provide.
>> >
>> >
>> >
>> > --Mike
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> > From: asterisk-biz-bounces at lists.digium.com
>> > [mailto:asterisk-biz-bounces at lists.digium.com] On Behalf Of Bruce 
>> > Reeves
>> > Sent: Monday, April 02, 2007 11:33 AM
>> > To: Commercial and Business-Oriented Asterisk Discussion
>> > Subject: Re: [asterisk-biz] G.722 VoIP Providers
>> >
>> >
>> >
>> > If I remember correctly 1.4 provides pass-thru support and trunk 
>> > will trans code and have prompts in G722.
>> >
>> >
>> > On 4/2/07, Mike Hammett < asterisk-biz at ics-il.net> wrote:
>> >
>> >
>> > Does Asterisk even support 722?  I'd love it if it did.
>> >
>> >
>> >
>> > --Mike
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> > From: asterisk-biz-bounces at lists.digium.com
>> > [mailto:asterisk-biz-bounces at lists.digium.com] On Behalf Of Glenn 
>> > Campbell
>> > Sent: Monday, April 02, 2007 10:34 AM
>> > To: Commercial and Business-Oriented Asterisk Discussion
>> > Subject: [asterisk-biz] G.722 VoIP Providers
>> >
>> >
>> >
>> >
>> > I have been reading about the new Polycom IP650 Phone and the uses 
>> > of HD Voice.  I see that it requires a G.722 codec to work.  Most 
>> > ITSP's that I have been working with do not offer this.
>> >
>> > Are there any ITSP's that use this technology?  I haven't purchased 
>> > the phone yet, but I am interested in demoing it for myself and some 
>> > of my customers.
>> >
>> > Thanks,
>> >
>> >
>> >
>> > --
>> > W. Glenn Campbell
>> > wcampbell at netstarsolutions.com
>> > Netstar Solutions LLC.
>> > http://www.netstarsolutions.com
>> > (270) 908.0057 x299
>> >
>> >
>> > _______________________________________________
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>> >
>> > asterisk-biz mailing list
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>> >
>> >
>> >
>> >
>> > --
>> > Bruce Reeves
>> > Nortex Networks
>> > _______________________________________________
>> > --Bandwidth and Colocation provided by Easynews.com --
>> >
>> > asterisk-biz mailing list
>> > To UNSUBSCRIBE or update options visit:
>> >   http://lists.digium.com/mailman/listinfo/asterisk-biz
>> >
>> >
>>
>>
>> --
>> Guilherme Loch Ges
>>
>> MSN:glwgoes at gmail.com
>> (48) 99115299
>> _______________________________________________
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>>
>> asterisk-biz mailing list
>> To UNSUBSCRIBE or update options visit:
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>>

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-- 
Best regards,
 Sergey                          mailto:b2b at ipstyle.org



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