[Asterisk-Users] SpanDSP + Lexmark 6170 = Cut off faxes?

[Scott Lykens]

Hello all.

I'm running SpanDSP 0.0.2pre4 with Asterisk v1.0 (10/23 from CVS) and
am having trouble with receiving cut off faxes from a Lexmark 6170 on
the distant end. I'm running this on a Tyan S2420 board that is about
four years old with a P3-800 and 256 MB on it.

I have tested with a PRI connected to both my Nortel Opt 11C and
directly to Verizon's (LEC) network. I have the same problem with
either configuration, which I am hoping rules out timing at least in
relation to the PRI and PSTN.

I receive between 300 and 400 rows of pixels of each page and then it
cuts off and goes to the next page. There are a few rows of identical
data then an abrupt end of the page. Then the next page starts out
looking great only to suffer the same fate. The proper number of pages
appears to be received but only ~350 rows of pixels worth.

This Lexmark 6170 is the only machine I have had trouble with so far.
All others appear to be able to send to me properly and completely.

For what it is worth I am including the tiffinfo on the received fax file.

Any help or pointers would be appreciated.

sl

-- tiffinfo

TIFF Directory at offset 0x153e
  Image Width: 1728 Image Length: 403
  Resolution: 77, 38.5 pixels/cm
  Bits/Sample: 1
  Compression Scheme: CCITT Group 3
  Photometric Interpretation: min-is-white
  FillOrder: lsb-to-msb
  Date & Time: "2004/11/08 17:27:40"
  Host Computer: "cs"
  Image Description: "2125551212          "
  Orientation: row 0 top, col 0 lhs
  Samples/Pixel: 1
  Rows/Strip: (infinite)
  Planar Configuration: single image plane
  Page Number: 0-3
  Software: spandsp
  Group 3 Options: 2-d encoding+EOL padding (5 = 0x5)
  Fax Data: receiver regenerated (1 = 0x1)
  Bad Fax Lines: 10
  Consecutive Bad Fax Lines: 7
  Fax Receive Time: 1115882420 secs
TIFF Directory at offset 0x2b00
  Image Width: 1728 Image Length: 335
  Resolution: 77, 38.5 pixels/cm
  Bits/Sample: 1
  Compression Scheme: CCITT Group 3
  Photometric Interpretation: min-is-white
  FillOrder: lsb-to-msb
  Date & Time: "2004/11/08 17:27:50"
  Host Computer: "cs"
  Image Description: "2125551212          "
  Orientation: row 0 top, col 0 lhs
  Samples/Pixel: 1
  Rows/Strip: (infinite)
  Planar Configuration: single image plane
  Page Number: 1-3
  Software: spandsp
  Group 3 Options: 2-d encoding+EOL padding (5 = 0x5)
  Fax Data: receiver regenerated (1 = 0x1)
  Bad Fax Lines: 18
  Consecutive Bad Fax Lines: 16
  Fax Receive Time: 1115882388 secs
TIFF Directory at offset 0x418c
  Image Width: 1728 Image Length: 337
  Resolution: 77, 38.5 pixels/cm
  Bits/Sample: 1
  Compression Scheme: CCITT Group 3
  Photometric Interpretation: min-is-white
  FillOrder: lsb-to-msb
  Date & Time: "2004/11/08 17:28:08"
  Host Computer: "cs"
  Image Description: "2125551212          "
  Orientation: row 0 top, col 0 lhs
  Samples/Pixel: 1
  Rows/Strip: (infinite)
  Planar Configuration: single image plane
  Page Number: 2-3
  Software: spandsp
  Group 3 Options: 2-d encoding+EOL padding (5 = 0x5)
  Fax Data: receiver regenerated (1 = 0x1)
  Bad Fax Lines: 18
  Consecutive Bad Fax Lines: 9
  Fax Receive Time: 1115882388 secs