Faxing and PCI (was Re: [Asterisk-Users] Digium cards,

[Steve Underwood]

Hi Anton,

If you need to tweak gains for FAXing, something is badly wrong. The 
modems operate over a wide range of signal levels.

Steve

Anton Krall wrote:

>Do you know if you can tweak gains if using unicall? I tried it once and if
>you move the gains on zaptel using a te110p with unicall on E1, when gains
>are +2 or -1, calls do not complete, forget even about faxing :)
>
> 
>
>|-----Original Message-----
>|From: asterisk-users-bounces at lists.digium.com 
>|[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of 
>|Doug Lytle
>|Sent: Tuesday, April 18, 2006 10:18 AM
>|To: Asterisk Users Mailing List - Non-Commercial Discussion
>|Subject: Re: Faxing and PCI (was Re: [Asterisk-Users] Digium cards,
>|
>|Steve Underwood wrote:
>|> Doug Lytle wrote:
>|>
>|>> Nicholas Kathmann wrote:
>|>
>|>
>|> If you need to tweak gains something is seriously wrong.
>|>
>|The 2 fax machines that I was having problem with were failing 
>|to train at 9600bps, they would then try at 7200 and finally 
>|train at 4800.  
>|Around 15 pages into the fax they would fail with a, "Failed 
>|to detect high speed-data carrier" and disconnect.  Increasing 
>|the rxgain to 3.0 and they now train at 9600bps and faxes complete.
>|
>|This PRI is connected to our Definity G3.
>|
>|Doug
>  
>