asterisk users - Jul 2012 - Digium IP Phone D40 quality, very bad

Hi All;

Really it is miserable.

I bring 8 Digium Phone D40 and I used them with a customer, the voice quality is
bad internally (between the extension), there is no clearance at all ! We are
hearing the voice like another person.

The used codec is ulaw.

The firmware version is: 1_1_0_0_48178

Even at the web based configuration at the phone it self, I am not able to do
reboot (there is no reboot button) and I can do this only from the Phone it
self.

On 12-07-31 08:22 AM, bilal ghayyad wrote:
> Hi All;
>
> Really it is miserable.
>
> I bring 8 Digium Phone D40 and I used them with a customer, the voice
quality is bad internally (between the extension), there is no clearance at all
! We are hearing the voice like another person.
>
> The used codec is ulaw.
>
> The firmware version is: 1_1_0_0_48178
>
> Even at the web based configuration at the phone it self, I am not able to
do reboot (there is no reboot button) and I can do this only from the Phone it
self.
>
>  From the speaker, the voice is very bad and weak.
>
> I am really feel disappointed why I did not use Polycom.
>
> Can someone help me or advise me what to do in this?
>
1. I'm curious why you went with the Digium D40 vs Polycom?  I assume 
from your post you have already successfully implemented Polycom phones 
on site.

2. Did you not test the phones before going on site?  If yes, what has 
changed between the two sites.  I get the impression when you say 
'Really it is miserable' this is the first time you have set them up and
are truly surprised with the quality.

3. There are many things that can affect audio quality.  What have you 
done to isolate the specific issue to the Digium D40?

-- 
Paul Belanger | PolyBeacon, Inc.
Jabber: paul.belanger at polybeacon.com | IRC: pabelanger (Freenode)
Github: https://github.com/pabelanger | Twitter: 
https://twitter.com/pabelanger

On 7/31/2012 7:22 AM, bilal ghayyad wrote:
> Hi All;
>
> Really it is miserable.
>
> I bring 8 Digium Phone D40 and I used them with a customer, the voice
quality is bad internally (between the extension), there is no clearance at all
! We are hearing the voice like another person.
>
> The used codec is ulaw.
>
> The firmware version is: 1_1_0_0_48178
>
> Even at the web based configuration at the phone it self, I am not able to
do reboot (there is no reboot button) and I can do this only from the Phone it
self.
>
>  From the speaker, the voice is very bad and weak.
>
> I am really feel disappointed why I did not use Polycom.
>
> Can someone help me or advise me what to do in this?
>
Many members of this list will testify that audio quality issues can 
happen on *any* SIP phone. Our support department regularly 
troubleshoots audio quality issues with many makes and models of phone 
(for those customers of our paid Asterisk Support). You can have a 
variety of audio quality problems caused from various root issues such 
as networking misconfiguration and even bad room acoustics or cheap 
headsets plugged into the phone.

If only it were as simple as "buy this phone it's good" or
"don't buy
this phone it's bad". Unfortunately as we all know, technology is often
more complex.

In regards to rebooting the phone it sounds like you found the method 
within the phones physical interface. However, there's no "reboot"
button in the web GUI of the phone.  There are two additional ways of 
doing it:

1) (I'm not using the DPMA), see - 
https://wiki.asterisk.org/wiki/display/DIGIUM/Digium+Phones+when+used+without+the+DPMA
You'll send it a SIP NOTIFY telling it to reconfigure.
2) (I'm using the DPMA), see - 
https://wiki.asterisk.org/wiki/display/DIGIUM/DPMA+and+the+Asterisk+CLI
You'll do digium_phones reconfigure phone <my phone> ...or... 
digium_phones reconfigure all

Your best next step is to call Digium, the manufacturer of the phone; 
They offer *free technical support* on the Digium phones and can best 
help you troubleshoot the issue. For support call  +1 (256) 428-6000 , 
option 2 and then 2 again.

Thanks,

-- 
Rusty Newton
Digium, Inc | Open Source Community Support Manager
Check us out at:www.digium.com  www.asterisk.org

On Tuesday 31 July 2012, bilal ghayyad wrote:
> Even at the web based configuration at the phone it self, I am not able to
> do reboot (there is no reboot button) and I can do this only from the
> Phone it self.
Real question:  Why are you needing to reboot your phones?

You should never be getting the phone into a state where the only way out is 
to reboot it.  The correct solution is *not* to make rebooting easier, but to 
avoid ever getting into that state in the first place.

By the way, we have recently acquired some D40s.  How do you change the time 
format from AM/PM to VCR-style?  (i.e. 16:41, not 4:41 pm).

-- 
AJS

Answers come *after* questions.