On Thu, 2003-03-27 at 06:22, WipeOut . wrote:> Hi, > > >From what I have been able to work out * supports G.711 a+u, GSM > and LPC-10 for VoIP calls. > > So far it seems that the Hardphones out there support G.711, G.729 > and some times a few other codecs.. > > So the common denominator seems to be G.711, the problem with this > codec is that it requires approx 64Kbps which is a little high for > what I am trying to do.. > > So it looks like the best codec is the GSM codec as far and badwidth > vs voice quality, but I can't seem to find which hard phones support > the GSM codec or if * supports the G.729 codecs or others.. > > Which phones do the * user commumity find work the best?? and which > codecs do you use??G729 is currently not available due to patent and license issues. You will find that G711 is fine on a local network, and asterisk does real well using IAX protocol and GSM codec. So if you are deploying enough phones to make it worth while to drop a * machine on the LAN with the hardphones you are set. Otherwise you might want to look at the Snom phone since it supports GSM. -- Steven Critchfield <critch@basesys.com>
What about G.723.1? Anybody have any experiece with this? I know I can order the documentation (including C source) from the ITU, what does this entitle me to do? Are there any licencing gotcha's to going with this approach? Lenny -----Original Message----- From: Steven Critchfield [mailto:critch@basesys.com] Sent: Thursday, March 27, 2003 7:21 AM To: asterisk-users@lists.digium.com Subject: Re: [Asterisk-Users] * + Codecs + Hardphones?? On Thu, 2003-03-27 at 06:22, WipeOut . wrote:> Hi, > > >From what I have been able to work out * supports G.711 a+u, GSM > and LPC-10 for VoIP calls. > > So far it seems that the Hardphones out there support G.711, G.729 > and some times a few other codecs.. > > So the common denominator seems to be G.711, the problem with this > codec is that it requires approx 64Kbps which is a little high for > what I am trying to do.. > > So it looks like the best codec is the GSM codec as far and badwidth > vs voice quality, but I can't seem to find which hard phones support > the GSM codec or if * supports the G.729 codecs or others.. > > Which phones do the * user commumity find work the best?? and which > codecs do you use??G729 is currently not available due to patent and license issues. You will find that G711 is fine on a local network, and asterisk does real well using IAX protocol and GSM codec. So if you are deploying enough phones to make it worth while to drop a * machine on the LAN with the hardphones you are set. Otherwise you might want to look at the Snom phone since it supports GSM. -- Steven Critchfield <critch@basesys.com> _______________________________________________ Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users
> So it looks like the best codec is the GSM codec as far and badwidth > vs voice quality, but I can't seem to find which hard phones support > the GSM codec or if * supports the G.729 codecs or others.. > > Which phones do the * user commumity find work the best?? and which > codecs do you use??You can purchase G.729 from Digium at $10/channel. Contact Greg Vance (256-428-6262). The G.729 is currently considered "beta". Mark
For $10 a pop, I would buy 24 to cover upto a T1 (and I've already got my call into Greg). This is exactly what I'm looking for. I suspect nothing bad would happen if you went over, except for that pang of guilt you may feel until you ante up for it's use :-) I'm personally more interested in the performance of the codec (ie what kind of raw power will I need to run it, how many can I run at once on a decently powered box etc...) Lenny -----Original Message----- From: James O. Sizemore III [mailto:james@deny.org] Sent: Thursday, March 27, 2003 1:29 PM To: asterisk-users@lists.digium.com Subject: Re: [Asterisk-Users] * + Codecs + Hardphones?? Quick question what happens if you go over your channel licenses? Mark Spencer wrote:>>So it looks like the best codec is the GSM codec as far and badwidth >>vs voice quality, but I can't seem to find which hard phones support >>the GSM codec or if * supports the G.729 codecs or others.. >> >>Which phones do the * user commumity find work the best?? and which >>codecs do you use?? >> >> > >You can purchase G.729 from Digium at $10/channel. Contact Greg Vance >(256-428-6262). The G.729 is currently considered "beta". > >Mark > >_______________________________________________ >Asterisk-Users mailing list >Asterisk-Users@lists.digium.com >http://lists.digium.com/mailman/listinfo/asterisk-users > >_______________________________________________ Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users