Installing codec g729 codec using

Asterisk will "pass through" g729 without a license, for example from the carrier who paid for it and to the legally licensed ATA's you bought, I believe you will find it already installed in Elastix, if you want to use it however, i.e. IVR voice mail or conference you will need to buy licenses from Digium, the legal owner, or you can be unethical and steal it with the help of someone in Lithuania. Please don't ask how to do that here.

Hi Ya Dicko

How do i get a free ticket to Lithuania?

Not many things are free, perhaps apart from what you have so far, the going rate is 10 dollars for each concurrent channel, call Digium, if you don't want to pay that, then just don't use it.

Dicko

Is that about $10 for each simultaneous call using g729 or is that a once only $10 or $10 per year ??

As I said . . .10 dollars for each concurrent channel . . . that will cover you for the rest of your life or the demise of your server, whichever comes first. You will need one into your IVR and one out of it if the ATA are set to use g729, for each call in progress at that point in time.

I am sorry Dicko. i still do not understand.

Channel ????

Does that mean you decide how many concurrent conversations you are going to have at any one time. If so do you have to decide in advance what that number is then buy the number of channels you think you may need ( Loading) ??

Have I got it right?

Not withstanding the above is g726 free ( Because that is in Eastix by default - g729 is not there by default)

Thanks in advance.

A channel is an audio path between two endpoints, in your case carrier to IVR = one, IVR to ATA = one, if using g729, so use g711 instead if you have the bandwidth. carrier to ATA, both licensed = 0. buy as many as you need. if you have two licenses everything works fine for one call, the third channel (second concurrent call) will just "not work", however when the IVR drops out of the loop you regain those licenses for reuse.

g729 is definitely there in Elastix, just do a rasterisk -x 'show codecs' and ls /usr/lib/asterisk/modules/format_* will confirm that for you, use anything that is there and usable in that list. For 729 It just won't work until you install the licenses for any endpoint on your server (IVR, Voicemail etc.)

The lower the bandwidth of the codec the higher the compression and load on your CPU if you need to transcode. some codecs sound better than others, but you are normally limited by what your VSP will support as both endpoints must negotiate and agree on a usable codec.

Some would say that g726 or GSM or even iLBC as adequate, some would disagree, its all a matter or quality, end-user acceptability and the willingness of your VSP to use your chosen codec,

Ultimately its just the basic economics (not just financial) of doing VOIP.

regards

dicko

Dicko

That clears it all up for me and thank you. I am on store.digium.com/productview.php?product_code=G729CODEC now having a snoop.

Cheers

I think MGG's problem is related to DTMF. Try using a different DTMF mode (info or rfc2833), as the use of g729 makes 'inband' unusable.

Also, g729 is not included by default in Elastix, AFAIK, dicko. You have to install it, either from digium or from the lithuanian friends.