Saturday, August 25, 2007

Re: [asterisk-users] asterisk and vad/cng

On 8/25/07, Adam KOSA <adamk@3a.hu> wrote:
> Hi List,
>
> i've set up a cisco 7912 for my asterisk box. I've had problems with
> VAD and CNG. After googling a bit, i've found an article about asterisk
> not supporting these two protocols, therefore it's better to turn them off.
>
> Since then i did not found answer to my two questions, maybe somebody
> here could help me:
>
> a) am i even able to turn off vad/cng on cisco 7912? SIP image 8.0
> version. I've been through the cisco admin guide, but it did not help.

This isn't a Cisco mailing list.

> b) the article mentioned above was dated 2006, does asterisk still not
> support VAD/CNG? I'm using 1.4.8, the log says it does not, but maybe a
> patch, or 1.4.11?

VAD is supported, CNG is not.

> I encounter no big problems, only with MOH: i have to make some noise
> (breathing loud etc) to hear the music. Not a big deal after all.

Bug in the MOH code....

> And some other questions not really related: anybody has experience
> with the following phones: linksys 921/941 and cisco 3911? Do these
> have the same problem? According to their datasheet, linksys supports
> VAD, but the user guide says nothing about turning it off.

Linksys 921/941 work fine with Asterisk. Just don't enable CNG.

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