[Asterisk-Users] Cisco ATA and G729

[Brian Wilkins]

You can only use g729 in pass-thru mode without paying for the licensing fees. 
G729 is probably the best codec around. If you plan on having any sort of 
thriving business based on VoIP, g729 would be the way to go. I don't suggest 
PCMU or PCMA for production. The ATA will pass a list of supported codecs to 
the Asterisk server and based on what you have allowed in your h323.conf or 
sip.conf file, that will be what codec is selected. Your audio quality 
problems could also be traced to a problem with transcoding between different 
codecs (i.e alaw -> ulaw problem). I suggest you try one by one, all the 
codecs available to you and disallow/allow codecs in your configuration until 
you can find the source of your problem. 

On Monday 15 November 2004 03:23 pm, kido noagbodji wrote:
> Hello all,
>
> >* However, when i set my Cisco ATA to G711, i can't hear any sound unless
> > I press at least two or three keys(any random keys). I am using the demo
> > context of >extension.conf file. Can that be due to a fast start problem?
> > Anyone knows how to checkthe faststartcapabilities of an ATA 186?
>
> Funny enough when i disabled the gsm, g729, g723 codec, it works fine (no
> need to press any key), with the alaw and the ulaw codec. I guess the ATA
> default to the alaw and the ulaw when it does not find the other codecs,
> However that is a lot of bandwidth i am wasting ...
>
> Before i licensed the g729 codec, is there a way i can "test" it?
>
> Many Thanks
>
> Kido
>   ----- Original Message -----
>   From: kido noagbodji
>   To: asterisk-users at lists.digium.com
>   Sent: Sunday, November 14, 2004 3:36 AM
>   Subject: [Asterisk-Users] Cisco ATA and G729
>
>
>   Hi all,
>
>   I am new to asterisk. I was able, but not without pain to install it on a
> FreeBSD box. I set up a cisco ATA 186 and the SJlabs softphone to work with
> the PBX. Three remarks:
>   * On the SJphone, i use the GSM and the G711 (ulaw and alaw) codec. In
> the h323.conf file i enabled those codec. Everything works great!!! *
> However, when i set my Cisco ATA to G711, i can't hear any sound unless I
> press at least two or three keys(any random keys). I am using the demo
> context of extension.conf file. Can that be due to a fast start problem?
> Anyone knows how to checkthe faststartcapabilities of an ATA 186? * Also
> when i set my ATA codec to g729 and in asterisk i allow=g729, i get a very
> low weird sound. What is that due to? I am guessing that i don't have the
> codec installed on the system. Is there an open source g729 codec available
> for FreeBSD?
>
>   Any help will be very much appreciated,
>
>   Thanks.
>
>   Kido
>
>
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