[CentOS] A working SIP Phone for Centos44?

[Theo Band]

John R Pierce wrote:
> Leonardo Vilela Pinheiro wrote:
>>
>> On 3/10/07, *Theo Band* <theo.band at xanadu-wireless.com 
>> <mailto:theo.band at xanadu-wireless.com>> wrote:
>>
>>     I try to find a softphone that works with Asterisk and Centos44, 
>> does
>>     anyone has a good suggestion or is it better to buy a hardphone?
>>
>>
>> AFAIK, microphone bad quality is more related to the hardware, not 
>> the software. My onboard "Intel high definition" sound chipset (ICH7 
>> compatible - Intel 945GNT) has a bad output sound, but a much worse 
>> input (microphone). I have tried using Windows XP, CentOS, Ubuntu, 
>> many softphones (Skype, X-Lite, Ekiga, Twinkle) and definitely the 
>> problem is hardware (or all drivers are broken).
>
> the output quality of the Intel branded motherboards I've used has 
> been quite good.   Microphone inputs somewhat less so, but still 
> plenty good enough for telephony IF your microphone has high enough 
> gain.     If someone  is recording high fidelity (music, etc) from 
> microphones, I recommend they get an external microphone preamp and 
> use the line input on their sound card, or even better a USB 
> input/output box.
>
> for voice/telephony, USB headsets are the way to go.
I also have one trust USB headset and it works, except the volume cannot 
be adjusted, it's always max (and that's not nice for a headset...).
I have 20 desktops running FC4/Centos44 on AMD based Motherboards. The 
sound is onboard using a Nvidia chipset. Using skype and esd/arts the 
sound is very good, no problem. As soon as I try any of the softphones 
the mic is heavily distorted. I can even hear a hum as if the ground 
shielding is not properly connected. Since skype works so nice (using 
eithers OSS or alsa) I expect this to be a software based problem not 
hardware. And one softphone is working with FC4 (slfphone) but not on 
Centos4.4. The mic sound is less compared to skype (there is a hiss, 
when pronouncing the letter 's' the sound is distorted) but upto now 
that's the only one that is acceptable for only FC4, not Centos :-(

Theo