[asterisk-users] faxing via linksys SPA3102 half page goes through

[Marco Signorini]

Joseph wrote:
> On 03/04/09 15:44, Marco Signorini wrote:
>   
>> Hi Joseph.
>> I've spent some time tuning the SPA3102 FXS line input and output gain
>> and I think that this is an important variable.
>> Let's try to record incoming and outgoing fax tones with asterisk on SIP
>> channel (disabling the fax detection on SPA and sending fax inband) and
>> look at the recorded file with a wave editor (Audacity).
>> I had better results if the maximum level is near half to the full
>> dynamic. Then switch to T38, if you need it.
>>     
>
> As I remember I have experimented with gain on PSTN line as well but have reset back to default.
> I have:
> SPA To PSTN Gain:0
> PSTN To SPA Gain:0
>
> I think "0"  is the default.
>
>   
Yes, "0" is the default.
Is the fax machine connected to the FXS port or do you use the SPA3102
only as a SIP 2 PSTN gateway?
If you use the FXS port, please take a look at the gain parameters you
can find in the "Miscellaneous" section in the "Regional" page (log in
as Administrator then switch to the "advanced" report).

Now I've -5 as input gain and -2 as output. I don't know if this could
helps you.


Best regards,
Marco Signorini


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