[Asterisk-Users] RE: Sipura SPA-841 Volume Oscillation Problem

Craig asterisk at nihost.net
Fri Jul 8 15:32:46 MST 2005 

Greetings,

We installed a number of SPA-841 in a office environment, originally
firmware was 0.9 something and the audio in the headsets worked really
well, with virtually no muting of received audio.

When I first upgraded a couple of the phones to 3.1.2 the headset audio
went to crap, muting incoming audio with any sort of background noise in
the room. Speaker phone is totally useless (any sort of room
noise-including incoming audio mutes the speaker) so I disconnected the
internal microphone and just use the speakerphone mode as a monitor for
off hook dialing.

Recently upgraded to the new release of 3.1.3 didn't make the headset
audio any better (but also didn't seem to make it any worse as some
people on the list seem to have observed) 

We where using the couple of units with 0.9 something for the
telephonists with headsets, but the phones crashed a number of times & I
had to update to the latest firmware now their headsets are pretty much
un-usable.

I was going to make up an adapter to hook the headset through the
handset port as handset audio doesn't seem to go through the same muting
problems, but this sort of defeats the purpose of having a simple phone,
with speaker (monitor) mode, handset and headset modes built in.

Suspect if the put in an option to turn off the audio muting for the
headset it would fix our problem, but we are probably going to have to
bite the bullet and put a couple of Cisco 7960 in for the headset
wearers.

cr 

Message: 2
Date: Fri, 8 Jul 2005 18:57:34 +0200
From: "Thierry Wehr" <wehr at japet.com>
Subject: RE: [Asterisk-Users] Sipura SPA-841 Volume Oscillation
	Problem
To: <asterisk-users at lists.digium.com>
Message-ID: <20050708165738.7B2CE74FC5 at mail.lirbox.net>
Content-Type: text/plain;	charset="iso-8859-1"

 Yes i we know it but as it is an intermediate patched version i think
it's
better way for the final release

A++

> -----Message d'origine-----
> De : Javier Ergas [mailto:jergas at gmx.net] 
> Envoyé : vendredi 8 juillet 2005 18:51
> À : twehr at japet.com
> Objet : RE: [Asterisk-Users] Sipura SPA-841 Volume Oscillation Problem
> 
> Thank you very much. Here you have another 3.1.4(a):
> 
> http://www.sipura.com/download/temp/phone/spa841-03-01-03-a-vo
> l-fix.zip
> 
> Cheers
> -----Mensaje original-----
> De: Thierry Wehr [mailto:wehr at japet.com] Enviado el: Viernes, 
> 08 de Julio de 2005 9:57
> Para: 'Javier Ergas'
> Asunto: RE: [Asterisk-Users] Sipura SPA-841 Volume Oscillation Problem
> 
> We are reselling sipura equipments and i'm in touch with the support
> 
> You can download the previous version on our web site
> 
> http://www.widevoip.com/download/firmware/spa841-3.1.2d.zip
> 
> Thierry
> http://www.widevoip.com
> 
> Best regards
>  
> 
> > -----Message d'origine-----
> > De : Javier Ergas [mailto:jergas at gmx.net] Envoyé : vendredi 
> 8 juillet 
> > 2005 15:21 À : twehr at japet.com Objet : RE: [Asterisk-Users] Sipura 
> > SPA-841 Volume Oscillation Problem
> > 
> > Hi,
> > 
> > How do you know?
> > Where can I find the previous version? I have 3.1.3(a) Do you know 
> > when will be an update?
> > 
> > Thanks,
> > 
> > Jergas
> > 
> > -----Mensaje original-----
> > De: asterisk-users-bounces at lists.digium.com
> > [mailto:asterisk-users-bounces at lists.digium.com] En nombre 
> de Thierry 
> > Wehr Enviado el: Viernes, 08 de Julio de 2005 3:44
> > Para: 'Asterisk Users Mailing List - Non-Commercial Discussion'
> > Asunto: RE: [Asterisk-Users] Sipura SPA-841 Volume 
> Oscillation Problem
> > 
> > Hello
> > 
> > Go back to the firmware before and all will be ok or wait until the 
> > next one
> > 
> > Best Regards
> > Thierry
> > 
> > > -----Message d'origine-----
> > > De : asterisk-users-bounces at lists.digium.com
> > > [mailto:asterisk-users-bounces at lists.digium.com] De la part
> > de Vahan
> > > Yerkanian Envoyé : vendredi 8 juillet 2005 07:23 À : 
> Asterisk Users 
> > > Mailing List - Non-Commercial Discussion Cc :
> > > sipura-support at external.cisco.com Objet : Re: 
> > [Asterisk-Users] Sipura
> > > SPA-841 Volume Oscillation Problem
> > > 
> > > Greetings,
> > > 
> > > I'm experiencing the same problem. It manifests itself
> > mostly in noisy
> > > environments - as soon as there is some increase of the
> > ambient noise
> > > the volume in the headpiece or the "speakerphone" decreases 
> > > immediately, and starts to randomly increase/decrease for 
> some time 
> > > after the ambient noise gets low. This is 100% repeatable
> > if you start
> > > the conversation by using speakerphone. As soon as you
> > switch to the
> > > handset, the defect disappears. Now the problem is that 
> 5% of calls 
> > > via headset have the same problem.
> > > 
> > > I am using the latest firmware for the SPA-841.
> > > 
> > > Javier Ergas wrote:
> > > > Hi all,
> > > > 
> > > >  
> > > > 
> > > > The problem is on the volume of the voice sent by the
> > > SPA-841. I think
> > > > the echo cancel algorithm sets a limit to the microphone
> > > when detects
> > > > sounds or noise from the earphone. This problem generates an 
> > > > oscillation on the voice volume sent by the phone and
> > even turns it
> > > > off completely for very little lapses of time making the
> > > communication
> > > > very uncomfortable. I manage three different 
> implementations with 
> > > > Asterisk and Sipura SPA-841 on different clients and network 
> > > > topologies, and on every one we are experiencing the same
> > situation.
> > > > 
> > > >  
> > > > 
> > > > Thanks,
> > > > 
> > > > jergas
> > > > 
> > > >  
> > > > 
> > > > 
> > > > 
> > > 
> > 
> ----------------------------------------------------------------------
> > > > --
> > > > 
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> 
>

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