[asterisk-users] System noise reduction

[Sunny Du]

The phone is Cisco 7961. My system is a bit different. The Cisco 7961
connected to Callmanager with SCCP, Callmanager connect to Asterisk with
E1. Will I call into Meetme bridge, I would hear system noise even I am in
meetme IVR. The call between Cisco phones are worked well. I aslo tried
Avaya phone -> Avaya 8700 ->Asterisk but not good luck too. It should be
something wrong in Asterisk, but I can not figure it out.





On Mon, May 4, 2009 at 7:32 AM, ContactTel Business <lists at contacttel.com>wrote:

>  What is the phone ?
>
>
>
> If spa9X2 then you upgraded firmware ? 6.1.5 ? coz im getting this too
> lately on non asterisk software.. but it disappears on first ring..
>
>
>
>
>
>
>
> *From:* asterisk-users-bounces at lists.digium.com [mailto:
> asterisk-users-bounces at lists.digium.com] *On Behalf Of *Sunny Du
> *Sent:* May-03-09 8:59 AM
> *To:* asterisk-users at lists.digium.com
> *Subject:* [asterisk-users] System noise reduction
>
>
>
> Hi team,
>
> I noted there has a little system noise while I dial into system. I do
> believe it is generated in system as I would heard those noise even I was in
> CDR. would anbody guide me where is the noise system generated?
>
> It is second time I meet this issue, last time was fixed by change from
> alaw to ulaw. But no luck is time...
>
>
> Regards,
> Sunny
>
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