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

[Marco Signorini]

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.


Hope this helps you.

Best regards,
Marco Signorini

=======================
INGEGNI Tech S.r.l.
http://www.ingegnitech.com



Joseph wrote:
> On 03/04/09 19:31, Michael wrote:
>   
>> On Wed, 04 Mar 2009 19:25:38 Joseph wrote:
>>     
>>> I'm faxing from  stand alone fax machine via linksys SPA3102 but most of
>>> the time only half or quarter page goes through.
>>>
>>> Did anybody have any experience like this?
>>>       
>> Should be obvious.... but does your up line SIP provide support T.38?
>>     
>
> What do you mean it should be obvious?
>
> I think Linksys SPA3102 does support T.38 
> On Line 1 I have:
> FAX Enable T38: Yes
> FAX T38 Redundancy: 1
> FAX Passthru Codec: G711u
> FAX Process NSE: Yes
> FAX Passthru Method: NSE
> FAX CNG Detect Enable: Yes
> FAX CED Detect Enable: Yes
>
>