[asterisk-users] app_rxfax Only Receives One Page

[Steve Underwood]

Marco Mouta wrote:

> It has happened to me, with a x100p card, problems receiving fax that 
> i've solved adjusting the gains.
>  
> Don't understand quite well why you say that...

Because the DTMF decoders and FAX modems work over a very wide range of 
signal levels. If you need to boost the signal to bring it within their 
operating range it is something very very weak, which will be noise and 
highly distorted when boosted. If changing gains seemed to help you, it 
was probably just a quirk. If you suggest to people they should try 
changing gains, you just create more support hassle for people like me. 
 From the audio files I have received it is clear that many Asterisk 
systems are operating with crazy gain settings that cause massive 
distortion of anything but the quietest voice.

Steve

>  
> On 9/6/06, *Steve Underwood* <steveu at coppice.org 
> <mailto:steveu at coppice.org>> wrote:
>
>     Marco Mouta wrote:
>
>     > Try to increase your rxgain, and check you have echocancel disabled
>
>     Better still, try leaving the gains alone. If the gain controls were
>     removed completely from Asterisk, support issues would decrease
>     dramatically.
>
>     Steve
>
>     > pls post your results
>     >
>     > On 9/6/06, *Steve Totaro* < stotaro at asteriskhelpdesk.com
>     <mailto:stotaro at asteriskhelpdesk.com>
>     > <mailto:stotaro at asteriskhelpdesk.com
>     <mailto:stotaro at asteriskhelpdesk.com>>> wrote:
>     >
>     >     Doug Lytle wrote:
>     >     > Steve Totaro wrote:
>     >     >> I am trying to setup a fax server and all I get is the first
>     >     page of
>     >     >> a multipage fax.  The first page is perfect quality.
>     >     >>
>     >     >> I am not sure how to debug this.  I have an HP DL320 with
>     a quad
>     >     >> Sangoma T1 board.
>     >     >
>     >     > You'll be much happier moving it over to HylaFAX and
>     iaxmodem.  Very
>     >     > easy to setup, low impact on the server and has error
>     correction.
>     >     >
>     >     > Doug
>     >     >
>     >     I used the asterfax install script which installs iaxmodem.  I
>     >     will look
>     >     into HylaFAX but I would love to find the solution to the
>     one page
>     >     problem while I pursue HylaFAX.
>     >
>