[Asterisk-Users] fax receive problem on zapata channel

[asterisk at frameweb.it]

I have a TE110P Digium card.
I am trying to receive fax, but the fax are almost always unreadable, i.e


==============================================================================
Oct 17 15:21:20 DEBUG[4054]: Pages transferred:  1
Oct 17 15:21:20 DEBUG[4054]: Image size:         1728 x 1157
Oct 17 15:21:20 DEBUG[4054]: Image resolution    7700 x 3850
Oct 17 15:21:20 DEBUG[4054]: Transfer Rate:      9600
Oct 17 15:21:20 DEBUG[4054]: Bad rows            26
Oct 17 15:21:20 DEBUG[4054]: Longest bad row run 5
Oct 17 15:21:20 DEBUG[4054]: Compression type    2
Oct 17 15:21:20 DEBUG[4054]: Image size (bytes)  0
Oct 17 15:21:20 DEBUG[4054]:
==============================================================================
Oct 17 15:21:24 DEBUG[4054]:
==============================================================================
Oct 17 15:21:24 DEBUG[4054]: Fax successfully received.
Oct 17 15:21:24 DEBUG[4054]: Remote station id: 0108680549
Oct 17 15:21:24 DEBUG[4054]: Local station id:
Oct 17 15:21:24 DEBUG[4054]: Pages transferred: 1
Oct 17 15:21:24 DEBUG[4054]: Image resolution:  7700 x 3850
Oct 17 15:21:24 DEBUG[4054]: Transfer Rate:     9600
Oct 17 15:21:24 DEBUG[4054]:
==============================================================================

this is one of the best (!!) received.

I tried to put, in zapata.conf,
faxdetect=incoming

but nothing changed.
also, the callerid does not appear in the $CALLERID variable (but in
ordinary phones, not fax, it appears)

callerid=asreceived
usecallerid=yes

Is there anything I can try ? i.e. raise/decrease the RX gain ?

thanks in  advance,

Andrea

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