[asterisk-users] Audiocodes MP-114 noise

[Jason Kim]

Jessee,
I tried many combinations of "Voice Volume", "Input
Gain" and packetization time , but it's noisy steel.
I'm using G.711A-law and packetization time is 20ms.
It can be impedance mismatch problem but i cannot
adjust impedance of FXO port of MP-114.


--- Jessee J Holmes <jholmes at atacomm.com> wrote:

> Jason,
> 
> There are a couple things we can try to fix your
> problem.
> 
> Your firmware shouldn't be an issue, but latest I've
> got now is:  
> MP118_SIP_F4.80A.034.004.cmp
> 
> Let's try some quick things first though:
> 
> In your web interface, go to advanced config -
> channel settings /  
> voice settings
> 
> There are some options here you can play with:
> 
> "Voice Volume" (IP side of this thing) - by default
> this should be  
> set at '1'. Try bringing this down slowly, I'd say
> in increments of 5  
> (-4, then -9, and so on).
> 
> Range on this option can be anywhere from -32 to
> +32, you really  
> shouldn't need to go beyond -15; but you're actual
> volume on the  
> calls should still stay reasonable.
> 
> "Input Gain" (telco side) is another option you can
> slowly change as  
> well (set to 0 by default).
> 
> There should also be spot where you can specify the
> "codername", you  
> could possibly try changing this to another codec
> such as G.729 or G. 
> 711u-law (should be the same codec being used on
> your Asterisk  
> system) try changing packet size from 20 to 40 or
> 60. This may also  
> help.
> 
> If none of this stuff helps, let me know. We can
> then start getting  
> really technical.
> 
> Jessee Holmes
> Atacomm / Ataractic Corporation
> www.atacomm.com
> V: 1-877-700-VOIP
> jholmes at atacomm.com
> 
> Looking for voice over IP products?  Visit our VoIP
> store at http:// 
> voipstore.atacomm.com/
> 
> 
> On Nov 1, 2006, at 1:45 AM, Jason Kim wrote:
> 
> > Thank you Jessee,
> >
> > Firmware seems to be recent(4.80A.025.004).
> > For 'noisy', I mean IP Phone <--> * <--> MP-114
> side.
> > Audio quality of MP-114 <--> PSTN <--> Analog
> phone is
> > good.
> > I think it can be power ground or gain problem.
> > Any experience?
> >
> > Thanks,
> > Jason
> >
> > --- Jessee J Holmes <jholmes at atacomm.com> wrote:
> >
> >> Dear Jason,
> >>
> >> Please define better noisy? You talking echo
> issues?
> >> Is it on just
> >> your side or on the called party's side as well?
> >> This start happening immediately, or was the box
> >> working before and
> >> the problem just started?
> >>
> >> Also, a quick heads up, make sure before even
> >> beginning to
> >> troubleshoot an issue like this you do a factory
> >> reset to the unit
> >> and get the latest available firmware on it.
> Usually
> >> that fixes
> >> annoying issues like this.
> >>
> >> Thanks,
> >>
> >>
> >> Jessee Holmes
> >> Atacomm / Ataractic Corporation
> >> www.atacomm.com
> >> V: 1-877-700-VOIP
> >> jholmes at atacomm.com
> >>
> >> Looking for voice over IP products?  Visit our
> VoIP
> >> store at http://
> >> voipstore.atacomm.com/
> >>
> >>
> >> On Oct 30, 2006, at 10:36 PM, Jason Kim wrote:
> >>
> >>> It's noisy while talking.
> >>> Any idea?
> >>>
> >>> Thanks in advance.
> >>> Jason
> >>>
> >>>
> >>>
> >>>
> >>
> >
>
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> >
> >
> >
>
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> 
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