Re: [asterisk-users] GSM codec is a good choice ???
On Wed, 25 Feb 2009 15:46:09 +0200, Tzafrir Cohen wrote: >On Wed, Feb 25, 2009 at 07:25:10AM -0600, Michael Graves wrote: > >> The trouble with Speex is that it has extremely limited support in >> hardware. I've yet to see a high quality IP phone that supports Speex >> directly. > >OTOH, it's well supported in soft phones. True, but that doesn't get you very far in most real world installations. IME, soft phones are an accessory to an installation, not typically the focus. Michael -- Michael Graves mgravesmstvp.com http://blog.mgraves.org o713-861-4005 c713-201-1262 sip:mgra...@mstvp.onsip.com skype mjgraves fwd 54245 ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] GSM codec is a good choice ???
On Wed, Feb 25, 2009 at 07:25:10AM -0600, Michael Graves wrote: > The trouble with Speex is that it has extremely limited support in > hardware. I've yet to see a high quality IP phone that supports Speex > directly. OTOH, it's well supported in soft phones. -- Tzafrir Cohen icq#16849755 jabber:tzafrir.co...@xorcom.com +972-50-7952406 mailto:tzafrir.co...@xorcom.com http://www.xorcom.com iax:gu...@local.xorcom.com/tzafrir ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] GSM codec is a good choice ???
On Wed, 25 Feb 2009 09:33:42 +0200, Tzafrir Cohen wrote: >On Tue, Feb 24, 2009 at 11:16:51PM -0200, David fire wrote: >> out there is a free for educational and no commercial G729 lib for asterisk >> you can use it to test in a non-comercial system. > >For personal use? Maybe. For educational use: not really. The licensing >of the Intel codec code are not that nice. > >And naturally, if you wan ta good speech codec with a high quality and >yet good compression, and no extra bagage of patents, your first choice >should be Speex. The trouble with Speex is that it has extremely limited support in hardware. I've yet to see a high quality IP phone that supports Speex directly. Michael -- Michael Graves mgravesmstvp.com http://blog.mgraves.org o713-861-4005 c713-201-1262 sip:mgra...@mstvp.onsip.com skype mjgraves fwd 54245 ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] GSM codec is a good choice ???
2009/2/25 Alejandro Cabrera Obed > But in my case, I don't need trascoding because every chanel is in GSM > and voicemail has gsm sound files. > > And for the moment, my Asterisk is not connected to the PSTN, so there > is no trascoding gsm-to-PCM or to analog. > > So I think gsm is a good choice for my scenario, do you ??? > Hi Alejandro! Just to answer your question clearly: Yes, GSM would be a working option for your scenario. If you ever need G711 to connect to ISDN the transcoding should be no problem for a P4 class system and for example 30 ISDN-Lines. But what the others want to say is that buying new phones just to avoid paying for G729 licenses may not be a good idea as the licenses are quite cheap (US$10 for every transcoding you USE at the same time, NOT for every phone you have). I hope that answers your question. Christian ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] GSM codec is a good choice ???
But in my case, I don't need trascoding because every chanel is in GSM and voicemail has gsm sound files. And for the moment, my Asterisk is not connected to the PSTN, so there is no trascoding gsm-to-PCM or to analog. So I think gsm is a good choice for my scenario, do you ??? Thanks a lot !!! On Wed, Feb 25, 2009 at 5:33 AM, Tzafrir Cohen wrote: > On Tue, Feb 24, 2009 at 11:16:51PM -0200, David fire wrote: >> out there is a free for educational and no commercial G729 lib for asterisk >> you can use it to test in a non-comercial system. > > For personal use? Maybe. For educational use: not really. The licensing > of the Intel codec code are not that nice. > > And naturally, if you wan ta good speech codec with a high quality and > yet good compression, and no extra bagage of patents, your first choice > should be Speex. > > -- > Tzafrir Cohen > icq#16849755 jabber:tzafrir.co...@xorcom.com > +972-50-7952406 mailto:tzafrir.co...@xorcom.com > http://www.xorcom.com iax:gu...@local.xorcom.com/tzafrir > > ___ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users > -- Alejandro Cabrera Obed aco1...@gmail.com www.alejandrocabrera.com.ar ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] GSM codec is a good choice ???
On Tue, Feb 24, 2009 at 11:16:51PM -0200, David fire wrote: > out there is a free for educational and no commercial G729 lib for asterisk > you can use it to test in a non-comercial system. For personal use? Maybe. For educational use: not really. The licensing of the Intel codec code are not that nice. And naturally, if you wan ta good speech codec with a high quality and yet good compression, and no extra bagage of patents, your first choice should be Speex. -- Tzafrir Cohen icq#16849755 jabber:tzafrir.co...@xorcom.com +972-50-7952406 mailto:tzafrir.co...@xorcom.com http://www.xorcom.com iax:gu...@local.xorcom.com/tzafrir ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] GSM codec is a good choice ???
On Tue, Feb 24, 2009 at 6:39 PM, David fire wrote: > ? > GSM is greate! there was a miss understood. > if you transcode more than 90 in a core 2 duo you get a bad audio > GSM to G729 or G711 to G729. > > G711 to GSM is ok, but you should test it. > The codec is fine, many multi core processors suck, there are serious bottlenecks between the cores and the memory bus. Everything is fine as long as there is room for all the data in the level n cache, but if you have get it from level n+1 cache, or the memory bus, by the time you get it, its too late. Don't know how much memory is needed per call transcoded, but when you multiply an increasing number of calls, sooner or later you will exceed the limit. If you want to see an amazing high school project that took third place in the Siemens Competion, http://www.cogito.org/Interviews/InterviewsDetail.aspx?ContentID=17633 These kids were wondering why they were having trouble getting the expected performance from their model, and discovered it was a limitation of their multi core processor. -- Drew Einhorn ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] GSM codec is a good choice ???
?
GSM is greate! there was a miss understood.
if you transcode more than 90 in a core 2 duo you get a bad audio
GSM to G729 or G711 to G729.
G711 to GSM is ok, but you should test it.
2009/2/24 Alejandro Cabrera Obed
> Do you think GSM codec has poor audio quality ???
>
> Because I've made some tests among softphones connected from different
> cities of my country and the audio was good to me.
>
> Maybe GSM is a good choice.
>
> On Tue, Feb 24, 2009 at 11:16 PM, David fire wrote:
> > out there is a free for educational and no commercial G729 lib for
> asterisk
> > you can use it to test in a non-comercial system.
> > the digium lib is much better. if you have more than 30~60 phones
> > transcoding inst a very good idea.
> > i made my self a test on a core 2 duo 64 bits 2GB of ram a test
> transcoding
> > more than 90 calls the sound quality was BAD not poor BAD.
> >
> > the digium transcoder is GREATE 0 cpu was gone for transcoding.
> >
> > keep this in mind.
> >
> > David
> >
> > 2009/2/24 Kristian Kielhofner
> >>
> >> On Mon, Feb 23, 2009 at 6:59 PM, Alejandro Cabrera Obed
> >> wrote:
> >> > Dear all, I have Asterisk 1.4 with SIP. I have a voicemail implemented
> >> > with GSM sound files.
> >> >
> >> > The problem is I have IP phones Utopix HyperPhone 202 which support
> >> > only G.729a/u and G.723.1 high/low, but not GSM.
> >> >
> >> > If I choose G.729A the "pass-throu" calls among users are OK, but
> >> > Asterisk can't transcode GSM to G.729A in voicemail calls.
> >> >
> >> > My company doesn'y want to pay for a G.729 license, so I'm thinking to
> >> > buy new IP phones with GSM support, so I have no problem with the
> >> > voicemail system.
> >> >
> >> > Are the IP phone with GSM support a good choice for me ???
> >> >
> >> > (Maybe in the future I need to connect the Asterisk with the PSTN, GSM
> >> > doesn't matter at this point ???)
> >> >
> >> > Really thanks,
> >> >
> >> > Alejandro
> >> >
> >>
> >> Install the G.729 sound files and make app_voicemail record messages
> >> (format=g729) in G729. As long as you don't need meetme or a few
> >> other apps that essentially require G.729 transcoding you don't need a
> >> license.
> >>
> >> --
> >> Kristian Kielhofner
> >> http://blog.krisk.org
> >> http://www.submityoursip.com
> >> http://www.astlinux.org
> >> http://www.star2star.com
> >>
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> >
> >
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>
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> aco1...@gmail.com
> www.alejandrocabrera.com.ar
>
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Re: [asterisk-users] GSM codec is a good choice ???
Do you think GSM codec has poor audio quality ???
Because I've made some tests among softphones connected from different
cities of my country and the audio was good to me.
Maybe GSM is a good choice.
On Tue, Feb 24, 2009 at 11:16 PM, David fire wrote:
> out there is a free for educational and no commercial G729 lib for asterisk
> you can use it to test in a non-comercial system.
> the digium lib is much better. if you have more than 30~60 phones
> transcoding inst a very good idea.
> i made my self a test on a core 2 duo 64 bits 2GB of ram a test transcoding
> more than 90 calls the sound quality was BAD not poor BAD.
>
> the digium transcoder is GREATE 0 cpu was gone for transcoding.
>
> keep this in mind.
>
> David
>
> 2009/2/24 Kristian Kielhofner
>>
>> On Mon, Feb 23, 2009 at 6:59 PM, Alejandro Cabrera Obed
>> wrote:
>> > Dear all, I have Asterisk 1.4 with SIP. I have a voicemail implemented
>> > with GSM sound files.
>> >
>> > The problem is I have IP phones Utopix HyperPhone 202 which support
>> > only G.729a/u and G.723.1 high/low, but not GSM.
>> >
>> > If I choose G.729A the "pass-throu" calls among users are OK, but
>> > Asterisk can't transcode GSM to G.729A in voicemail calls.
>> >
>> > My company doesn'y want to pay for a G.729 license, so I'm thinking to
>> > buy new IP phones with GSM support, so I have no problem with the
>> > voicemail system.
>> >
>> > Are the IP phone with GSM support a good choice for me ???
>> >
>> > (Maybe in the future I need to connect the Asterisk with the PSTN, GSM
>> > doesn't matter at this point ???)
>> >
>> > Really thanks,
>> >
>> > Alejandro
>> >
>>
>> Install the G.729 sound files and make app_voicemail record messages
>> (format=g729) in G729. As long as you don't need meetme or a few
>> other apps that essentially require G.729 transcoding you don't need a
>> license.
>>
>> --
>> Kristian Kielhofner
>> http://blog.krisk.org
>> http://www.submityoursip.com
>> http://www.astlinux.org
>> http://www.star2star.com
>>
>> ___
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>>
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>> To UNSUBSCRIBE or update options visit:
>> http://lists.digium.com/mailman/listinfo/asterisk-users
>
>
>
> --
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Re: [asterisk-users] GSM codec is a good choice ???
out there is a free for educational and no commercial G729 lib for asterisk
you can use it to test in a non-comercial system.
the digium lib is much better. if you have more than 30~60 phones
transcoding inst a very good idea.
i made my self a test on a core 2 duo 64 bits 2GB of ram a test transcoding
more than 90 calls the sound quality was BAD not poor BAD.
the digium transcoder is GREATE 0 cpu was gone for transcoding.
keep this in mind.
David
2009/2/24 Kristian Kielhofner
> On Mon, Feb 23, 2009 at 6:59 PM, Alejandro Cabrera Obed
> wrote:
> > Dear all, I have Asterisk 1.4 with SIP. I have a voicemail implemented
> > with GSM sound files.
> >
> > The problem is I have IP phones Utopix HyperPhone 202 which support
> > only G.729a/u and G.723.1 high/low, but not GSM.
> >
> > If I choose G.729A the "pass-throu" calls among users are OK, but
> > Asterisk can't transcode GSM to G.729A in voicemail calls.
> >
> > My company doesn'y want to pay for a G.729 license, so I'm thinking to
> > buy new IP phones with GSM support, so I have no problem with the
> > voicemail system.
> >
> > Are the IP phone with GSM support a good choice for me ???
> >
> > (Maybe in the future I need to connect the Asterisk with the PSTN, GSM
> > doesn't matter at this point ???)
> >
> > Really thanks,
> >
> > Alejandro
> >
>
> Install the G.729 sound files and make app_voicemail record messages
> (format=g729) in G729. As long as you don't need meetme or a few
> other apps that essentially require G.729 transcoding you don't need a
> license.
>
> --
> Kristian Kielhofner
> http://blog.krisk.org
> http://www.submityoursip.com
> http://www.astlinux.org
> http://www.star2star.com
>
> ___
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>
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> To UNSUBSCRIBE or update options visit:
> http://lists.digium.com/mailman/listinfo/asterisk-users
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Re: [asterisk-users] GSM codec is a good choice ???
On Mon, Feb 23, 2009 at 6:59 PM, Alejandro Cabrera Obed wrote: > Dear all, I have Asterisk 1.4 with SIP. I have a voicemail implemented > with GSM sound files. > > The problem is I have IP phones Utopix HyperPhone 202 which support > only G.729a/u and G.723.1 high/low, but not GSM. > > If I choose G.729A the "pass-throu" calls among users are OK, but > Asterisk can't transcode GSM to G.729A in voicemail calls. > > My company doesn'y want to pay for a G.729 license, so I'm thinking to > buy new IP phones with GSM support, so I have no problem with the > voicemail system. > > Are the IP phone with GSM support a good choice for me ??? > > (Maybe in the future I need to connect the Asterisk with the PSTN, GSM > doesn't matter at this point ???) > > Really thanks, > > Alejandro > Install the G.729 sound files and make app_voicemail record messages (format=g729) in G729. As long as you don't need meetme or a few other apps that essentially require G.729 transcoding you don't need a license. -- Kristian Kielhofner http://blog.krisk.org http://www.submityoursip.com http://www.astlinux.org http://www.star2star.com ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] GSM codec is a good choice ???
Yes, there is a WAN among the hardphones and my Asterisk server. I know the GSM bitrate is about 31 Kbps. Thanks On Tue, Feb 24, 2009 at 1:41 PM, Olivier wrote: > > > 2009/2/24 Alejandro Cabrera Obed >> >> Thanks for your comment about codecsI tell you I can't use G.711 >> because I use a WAN link, and this is a wide band codec. >> >> Is GSM codec totally free (avoid to pay for any license) ??? > > yes ! > Is there a WAN between your hardphones and Asterisk ? >> >> >> Thnks again. >> >> On Tue, Feb 24, 2009 at 11:50 AM, Tiago Durante >> wrote: >> > I'd use alaw/ulaw for everything that's local, gsm or g729 only for >> > remote extensions. >> > >> > On 2/24/09, Philipp Kempgen wrote: >> >> Alejandro Cabrera Obed schrieb: >> >>> Dear all, I have Asterisk 1.4 with SIP. I have a voicemail implemented >> >>> with GSM sound files. >> >>> >> >>> The problem is I have IP phones Utopix HyperPhone 202 which support >> >>> only G.729a/u and G.723.1 high/low, but not GSM. >> >> >> >> http://www.utopixnetworks.com.ar/ip_phones_hiperphone_202.php >> >> According to the web site the Utopix HiperPhone 202 and 112 >> >> support G.711a/u (alaw/ulaw) as well. >> >> So why not use G.711a for everything? >> >> >> >> >> >> Philipp Kempgen >> >> -- >> >> AMOOCON 2009, May 4-5, Rostock / Germany -> http://www.amoocon.de >> >> Asterisk: http://the-asterisk-book.com - http://das-asterisk-buch.de >> >> AMOOMA GmbH - Bachstr. 126 - 56566 Neuwied -> http://www.amooma.de >> >> Geschäftsführer: Stefan Wintermeyer, Handelsregister: Neuwied B14998 >> >> -- >> >> >> >> ___ >> >> -- Bandwidth and Colocation Provided by http://www.api-digital.com -- >> >> >> >> asterisk-users mailing list >> >> To UNSUBSCRIBE or update options visit: >> >>http://lists.digium.com/mailman/listinfo/asterisk-users >> >> >> > >> > -- >> > Sent from my mobile device >> > >> > Tiago Durante >> > >> > ,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,., >> > Perseverance is the hard work you do after you >> > get tired of doing the hard work you already did. >> > -- Newt Gingrich >> > >> > ___ >> > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- >> > >> > asterisk-users mailing list >> > To UNSUBSCRIBE or update options visit: >> > http://lists.digium.com/mailman/listinfo/asterisk-users >> > >> >> >> >> -- >> Alejandro Cabrera Obed >> aco1...@gmail.com >> www.alejandrocabrera.com.ar >> >> ___ >> -- Bandwidth and Colocation Provided by http://www.api-digital.com -- >> >> asterisk-users mailing list >> To UNSUBSCRIBE or update options visit: >> http://lists.digium.com/mailman/listinfo/asterisk-users > > ___ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users > -- Alejandro Cabrera Obed aco1...@gmail.com www.alejandrocabrera.com.ar ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] GSM codec is a good choice ???
Tiago Durante wrote: > On Tue, Feb 24, 2009 at 10:41 AM, Olivier wrote: >> >> 2009/2/24 Alejandro Cabrera Obed >>> Thanks for your comment about codecsI tell you I can't use G.711 >>> because I use a WAN link, and this is a wide band codec. >>> >>> Is GSM codec totally free (avoid to pay for any license) ??? >> yes ! >> Is there a WAN between your hardphones and Asterisk ? > > GSM is a great and free codec. However if your phones doesn't have it, > you'll have to buy the g729 licenses... How much would new phones cost? If they cost more than $10 each then you will spend more money by buying new phones rather than buying a G729 license. Remember G729 is licensed on a per simultaneous channel basis. i.e. if you buy 10 licenses you can have up to 10 G729 channels in use at any one time. You do not need one license per phone. -- Eric Wieling * Asteria Solutions Group * Huntsville, AL Call centers * IVRs * Enterprise PBXs * Conferencing applications 256-705-0277 * http://www.asteriasgi.com/ * sa...@asteriasgi.com ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] GSM codec is a good choice ???
On Tue, Feb 24, 2009 at 10:41 AM, Olivier wrote: > > > 2009/2/24 Alejandro Cabrera Obed >> >> Thanks for your comment about codecsI tell you I can't use G.711 >> because I use a WAN link, and this is a wide band codec. >> >> Is GSM codec totally free (avoid to pay for any license) ??? > > yes ! > Is there a WAN between your hardphones and Asterisk ? GSM is a great and free codec. However if your phones doesn't have it, you'll have to buy the g729 licenses... regards, -- Tiago Durante ,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,., Perseverance is the hard work you do after you get tired of doing the hard work you already did. -- Newt Gingrich ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] GSM codec is a good choice ???
2009/2/24 Alejandro Cabrera Obed > Thanks for your comment about codecsI tell you I can't use G.711 > because I use a WAN link, and this is a wide band codec. > > Is GSM codec totally free (avoid to pay for any license) ??? yes ! Is there a WAN between your hardphones and Asterisk ? > > > Thnks again. > > On Tue, Feb 24, 2009 at 11:50 AM, Tiago Durante > wrote: > > I'd use alaw/ulaw for everything that's local, gsm or g729 only for > > remote extensions. > > > > On 2/24/09, Philipp Kempgen wrote: > >> Alejandro Cabrera Obed schrieb: > >>> Dear all, I have Asterisk 1.4 with SIP. I have a voicemail implemented > >>> with GSM sound files. > >>> > >>> The problem is I have IP phones Utopix HyperPhone 202 which support > >>> only G.729a/u and G.723.1 high/low, but not GSM. > >> > >> http://www.utopixnetworks.com.ar/ip_phones_hiperphone_202.php > >> According to the web site the Utopix HiperPhone 202 and 112 > >> support G.711a/u (alaw/ulaw) as well. > >> So why not use G.711a for everything? > >> > >> > >> Philipp Kempgen > >> -- > >> AMOOCON 2009, May 4-5, Rostock / Germany -> http://www.amoocon.de > >> Asterisk: http://the-asterisk-book.com - http://das-asterisk-buch.de > >> AMOOMA GmbH - Bachstr. 126 - 56566 Neuwied -> http://www.amooma.de > >> Geschäftsführer: Stefan Wintermeyer, Handelsregister: Neuwied B14998 > >> -- > >> > >> ___ > >> -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > >> > >> asterisk-users mailing list > >> To UNSUBSCRIBE or update options visit: > >>http://lists.digium.com/mailman/listinfo/asterisk-users > >> > > > > -- > > Sent from my mobile device > > > > Tiago Durante > > > > ,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,., > > Perseverance is the hard work you do after you > > get tired of doing the hard work you already did. > > -- Newt Gingrich > > > > ___ > > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > > > > asterisk-users mailing list > > To UNSUBSCRIBE or update options visit: > > http://lists.digium.com/mailman/listinfo/asterisk-users > > > > > > -- > Alejandro Cabrera Obed > aco1...@gmail.com > www.alejandrocabrera.com.ar > > ___ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users > ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] GSM codec is a good choice ???
Thanks for your comment about codecsI tell you I can't use G.711 because I use a WAN link, and this is a wide band codec. Is GSM codec totally free (avoid to pay for any license) ??? Thnks again. On Tue, Feb 24, 2009 at 11:50 AM, Tiago Durante wrote: > I'd use alaw/ulaw for everything that's local, gsm or g729 only for > remote extensions. > > On 2/24/09, Philipp Kempgen wrote: >> Alejandro Cabrera Obed schrieb: >>> Dear all, I have Asterisk 1.4 with SIP. I have a voicemail implemented >>> with GSM sound files. >>> >>> The problem is I have IP phones Utopix HyperPhone 202 which support >>> only G.729a/u and G.723.1 high/low, but not GSM. >> >> http://www.utopixnetworks.com.ar/ip_phones_hiperphone_202.php >> According to the web site the Utopix HiperPhone 202 and 112 >> support G.711a/u (alaw/ulaw) as well. >> So why not use G.711a for everything? >> >> >> Philipp Kempgen >> -- >> AMOOCON 2009, May 4-5, Rostock / Germany -> http://www.amoocon.de >> Asterisk: http://the-asterisk-book.com - http://das-asterisk-buch.de >> AMOOMA GmbH - Bachstr. 126 - 56566 Neuwied -> http://www.amooma.de >> Geschäftsführer: Stefan Wintermeyer, Handelsregister: Neuwied B14998 >> -- >> >> ___ >> -- Bandwidth and Colocation Provided by http://www.api-digital.com -- >> >> asterisk-users mailing list >> To UNSUBSCRIBE or update options visit: >>http://lists.digium.com/mailman/listinfo/asterisk-users >> > > -- > Sent from my mobile device > > Tiago Durante > > ,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,., > Perseverance is the hard work you do after you > get tired of doing the hard work you already did. > -- Newt Gingrich > > ___ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users > -- Alejandro Cabrera Obed aco1...@gmail.com www.alejandrocabrera.com.ar ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] GSM codec is a good choice ???
I'd use alaw/ulaw for everything that's local, gsm or g729 only for remote extensions. On 2/24/09, Philipp Kempgen wrote: > Alejandro Cabrera Obed schrieb: >> Dear all, I have Asterisk 1.4 with SIP. I have a voicemail implemented >> with GSM sound files. >> >> The problem is I have IP phones Utopix HyperPhone 202 which support >> only G.729a/u and G.723.1 high/low, but not GSM. > > http://www.utopixnetworks.com.ar/ip_phones_hiperphone_202.php > According to the web site the Utopix HiperPhone 202 and 112 > support G.711a/u (alaw/ulaw) as well. > So why not use G.711a for everything? > > > Philipp Kempgen > -- > AMOOCON 2009, May 4-5, Rostock / Germany -> http://www.amoocon.de > Asterisk: http://the-asterisk-book.com - http://das-asterisk-buch.de > AMOOMA GmbH - Bachstr. 126 - 56566 Neuwied -> http://www.amooma.de > Geschäftsführer: Stefan Wintermeyer, Handelsregister: Neuwied B14998 > -- > > ___ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: >http://lists.digium.com/mailman/listinfo/asterisk-users > -- Sent from my mobile device Tiago Durante ,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,., Perseverance is the hard work you do after you get tired of doing the hard work you already did. -- Newt Gingrich ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] GSM codec is a good choice ???
Alejandro Cabrera Obed schrieb: > Dear all, I have Asterisk 1.4 with SIP. I have a voicemail implemented > with GSM sound files. > > The problem is I have IP phones Utopix HyperPhone 202 which support > only G.729a/u and G.723.1 high/low, but not GSM. http://www.utopixnetworks.com.ar/ip_phones_hiperphone_202.php According to the web site the Utopix HiperPhone 202 and 112 support G.711a/u (alaw/ulaw) as well. So why not use G.711a for everything? Philipp Kempgen -- AMOOCON 2009, May 4-5, Rostock / Germany -> http://www.amoocon.de Asterisk: http://the-asterisk-book.com - http://das-asterisk-buch.de AMOOMA GmbH - Bachstr. 126 - 56566 Neuwied -> http://www.amooma.de Geschäftsführer: Stefan Wintermeyer, Handelsregister: Neuwied B14998 -- ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] GSM codec is a good choice ???
On Mon, 23 Feb 2009, Alejandro Cabrera Obed wrote: > Dear all, I have Asterisk 1.4 with SIP. I have a voicemail implemented > with GSM sound files. > > The problem is I have IP phones Utopix HyperPhone 202 which support only > G.729a/u and G.723.1 high/low, but not GSM. g723 is supported by Asterisk. I've never used it, but it shows up with the "show codecs" command. > If I choose G.729A the "pass-throu" calls among users are OK, but > Asterisk can't transcode GSM to G.729A in voicemail calls. Because you don't have a g729 codec? > My company doesn'y want to pay for a G.729 license, so I'm thinking to > buy new IP phones with GSM support, so I have no problem with the > voicemail system. You may want to rethink this. G.729 licenses are only $10 per channel. Can you replace the instrument and retrain your users for $10 each? > (Maybe in the future I need to connect the Asterisk with the PSTN, GSM > doesn't matter at this point ???) That would depend on how you interface to the PSTN. Thanks in advance, Steve Edwards sedwa...@sedwards.com Voice: +1-760-468-3867 PST Newline Fax: +1-760-731-3000 ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
[asterisk-users] GSM codec is a good choice ???
Dear all, I have Asterisk 1.4 with SIP. I have a voicemail implemented with GSM sound files. The problem is I have IP phones Utopix HyperPhone 202 which support only G.729a/u and G.723.1 high/low, but not GSM. If I choose G.729A the "pass-throu" calls among users are OK, but Asterisk can't transcode GSM to G.729A in voicemail calls. My company doesn'y want to pay for a G.729 license, so I'm thinking to buy new IP phones with GSM support, so I have no problem with the voicemail system. Are the IP phone with GSM support a good choice for me ??? (Maybe in the future I need to connect the Asterisk with the PSTN, GSM doesn't matter at this point ???) Really thanks, Alejandro ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
