Acermodem 56 Surf can't receive fax

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Hi,

On Sun, Jan 17, 1999 at 12:11:37AM +0100, Frank Thieme wrote:
> 01/15 16:45:57 yS1   mdm_gis: string 1: '5601'
> 01/15 16:45:57 yS1    got:[0a][0d][0a]OK[0d]
> 01/15 16:45:57 yS1   mdm_identify: string '5601'
> 01/15 16:45:57 yS1  USR Courier/Sportster 56k detected
> 01/15 16:45:58 yS1  mdm_send: 'ATI3'
> 01/15 16:45:58 yS1    got:[0a]ATI3[0d]
> 01/15 16:45:58 yS1    got:[0d][0a]Texas Instruments RK 56000 Fax Rev.
> 4.7.30[0d]

Now that's pretty interesting.  It's not an USR, but it tries to identify
as one.  Could be an USR/3com OEM, with the known-good fax reception
quality.

[Fax reception seems to be exceptionally hard.  ALL current modem vendors
have problems with it.  Some just give up at session startup (ELSA),
others just mess up the whole reception process... - has anybody any
recommendation of a Really Good faxmodem for reception?  My ZyXEL 2864
works surprisingly well, if I think about it...]

> 01/15 16:45:59 yS1   mdm_command: string 'AT+FCC=1,5,0,2,0,0,0,0'
> 01/15 16:45:59 yS1    got:[0d][0a]OK[0d]
> 01/15 16:45:59 yS1   mdm_command: string 'OK' -> OK
> 
> the Sportster workaround 1,5,0,2,0,0,0,5 doesn't work...

This workaround is only for *sending*...

You might want to try "mgetty -m 9600", to force reception down to
9600bps max - this might help.  It might not.  You'll have to try it.

[..]
> 01/15 16:49:25 yS1    got:[0d][0a]CONNECT[0d]
> 01/15 16:49:31 yS1   fax_wait_for: string 'CONNECT'** found **
> 01/15 16:49:31 yS1   sending DC2
> 01/15 16:49:31 yS1   fax_get_page_data: wait for EOL, got:
> [0a][19]D5V='v[11]L[0f][ab][d6][9b]sGZ[a8][b6][df][8d][d1][a3]}[c0][19]dH[1e]lx[84]c[0d][f8]$[87][18]m[c7][b3]m[8d][8c][01][e6][98][84]
> [de]r9[b5][99][f6][98]y[e7][1c]i[e9][99]v[15][9b][12]T[c6]a[d4]fED[19][85][c4][bf][ad]Bf[a6]5[ec][09][d7][02][85][87][de]z[06][df][92][b6][19]nW\[96][d8][9c]f;[f5]i[8d][d7]a[81][8f]}[cc][89]}[97][9c]e[f7][9b]lg[da][12]v[9c][9e]7'[a6][a7]`[b8][17][db][03][f7]Y[0e]W[03][9d][ef][19][ba]M[1c]ti[98]d[16][d8][05][c7][1e][9a][9c][9a]sC[9b]u[97][1a]q[86][07]e[f1][e7]a[e6][9e]hg'nY[f7][99][d6]
> tb-[17][13][9b][8a][d1][da]x8[98]a[f6][d9]sw[9d][d4][f7]Xe[a7][99][89][86][da][a1][c9]/i[d6][de]i[cb]Yz[ee][19]l&\[1a]6[1c]}[87][02]j[10]

Pretty typical USR problem: much "line noise" at the top of the received
page.

> 01/15 16:49:31 yS1  fax_get_page_data: receiving
> /var/spool/fax/incoming/ff69f637bS1-+49441800668007.01...
> 01/15 16:49:32 yS1  fax_get_page_data: page end, bytes received: 1598
> 01/15 16:49:32 yS1  fax_wait_for(OK)
> 01/15 16:49:32 yS1    got:[0d][0a]+FPS:1,3,0,0,0[0d]
> 01/15 16:49:32 yS1   fax_wait_for: string '+FPS:1,3,0,0,0'
> 01/15 16:49:32 yS1  page status: +FPS:1,3,0,0,0
> 01/15 16:49:32 yS1   3 lines received, 0 lines bad, 0 bytes lost

... and fairly crappy reception afterwards.

I'd try to get the latest firmware version, and if that still doesn't
work, give it back.

gert
-- 
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Gert Doering - Munich, Germany                             gert@greenie.muc.de
fax: +49-89-35655025                        gert.doering@physik.tu-muenchen.de