Error receiving FAX

Gabor Csuri (csucsu@logisztika.dunaferr.hu)
Mon, 20 Apr 1998 09:07:45 +0200


Gert Doering wrote:
> If that one works in class 2 mode,
> I'm very much interested to see what they do differently.  If they run the
> modem in class 1 mode (what I suspect), don't bother - in class 1 mode,
> the modem firmware can be very dumb, because the host CPU does all the
> work.

Hi All !

It's few days later I got some answer from myself.
My office has a Siemens phone center and my Company has an
other too. When I tested with Windows I used a modem with
inside line only but I tested Linux with outside line !!!

When I send a FAX inside my office (across the Siemens
phone center only ) everything is works well! 

When I try to send a FAX from outside of my Office (the communication 
is goes across the Siemens phone center and my company's phone
center), I got +FHNG:73  Error message always, and my modem hangs up 
the line! I tried it from the same FAX & same line too, I just Called
a "0" for outside line !

I made some test with my modems (both of them are MT2834ZDXI).
I made a connection inside my office, after it outside from my 
office and I put some line-probe command :

Here's inside :

ATL8
018    2009    0313A
***********  ONLINE DIAGNOSTICS  **********
LINK    TYPE            V.34
LINE    SPEED           28800/24000
SERIAL  SPEED           115200
ERROR CNTRL/COMPRESS    LAPM COMPRESSED
FALL    BACK/FORWARD    LOCALLY ENABLED
DATA    FORMAT          ASYNCHRONOUS
SYMBOL  RATE(SYMETRIC)  3429/3429
CARRIER FREQUENCY       1959/1959
TRELLIS ENCODER         4D 16-STATE/4D 16-STATE
PRECODING               OFF/ON
LINE    TYPE            DIAL UP

RECV. SIGNAL LEVEL     -031.5 dBm
TRANS SIGNAL LEVEL     -019 dBm
NUMBER OF RETRAINS     000
ROUND TRIP DELAY       0003 ms    (MEANINGFUL IN V34 AND V32 MODE )
NEAR/FAR ECHO LEVEL    -032.5/066.5 dBm

ATL9
 -014-|
 -016-|
 -018-|
 -020-|      _ _ _ _ _ _ _ _ _ _ _ _
 -022-|  * * * * * * * * * * * * * * * * * _ _
 -024-|  * * * * * * * * * * * * * * * * * * * * _
 -026-|* * * * * * * * * * * * * * * * * * * * * * *
 -028-|* * * * * * * * * * * * * * * * * * * * * * * *
 -030-|* * * * * * * * * * * * * * * * * * * * * * * * _
 -032-|* * * * * * * * * * * * * * * * * * * * * * * * *
 -034-|* * * * * * * * * * * * * * * * * * * * * * * * *
 -036-|* * * * * * * * * * * * * * * * * * * * * * * * *
 -038-|* * * * * * * * * * * * * * * * * * * * * * * * *
 -040-|* * * * * * * * * * * * * * * * * * * * * * * * *
 -042-|* * * * * * * * * * * * * * * * * * * * * * * * *
 -044-|* * * * * * * * * * * * * * * * * * * * * * * * *
       ----------------Signal Strength------------------
       0 0 0 0 0 0 1 1 1 1 1 1 1 2 2 2 2 2 2 3 3 3 3 3 3
       1 3 4 6 7 9 0 2 3 5 6 8 9 1 2 4 5 7 8 0 1 3 4 6 7
       5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5
       0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

ATL10
 -009-|
 -011-|
 -013-|                 SIGNAL to Noise Ratio
 -015-|                                                _
 -017-|_                                           _ _ *
 -019-|*                     _ _ _ * * * * * * * * * * *
 -021-|* * * * _ _ _ * * * * * * * * * * * * * * * * * *
 -023-|* * * * * * * * * * * * * * * * * * * * * * * * *
 -025-|* * * * * * * * * * * * * * * * * * * * * * * * *
 -027-|* * * * * * * * * * * * * * * * * * * * * * * * *
 -029-|* * * * * * * * * * * * * * * * * * * * * * * * *
 -031-|* * * * * * * * * * * * * * * * * * * * * * * * *
 -033-|* * * * * * * * * * * * * * * * * * * * * * * * *
 -035-|* * * * * * * * * * * * * * * * * * * * * * * * *
 -037-|* * * * * * * * * * * * * * * * * * * * * * * * *
 -039-|* * * * * * * * * * * * * * * * * * * * * * * * *
       ----------------------SNR------------------------
       0 0 0 0 0 0 1 1 1 1 1 1 1 2 2 2 2 2 2 3 3 3 3 3 3
       1 3 4 6 7 9 0 2 3 5 6 8 9 1 2 4 5 7 8 0 1 3 4 6 7
       5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5
       0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

ATL11
 -054-|
 -056-|
 -058-|
 -060-|                            _   _ _
 -062-|                  _ _ _ * * * * * * * _ _ _ _
 -064-|* * * _     _ _ * * * * * * * * * * * * * * * * *
 -066-|* * * * * * * * * * * * * * * * * * * * * * * * *
 -068-|* * * * * * * * * * * * * * * * * * * * * * * * *
 -070-|* * * * * * * * * * * * * * * * * * * * * * * * *
 -072-|* * * * * * * * * * * * * * * * * * * * * * * * *
 -074-|* * * * * * * * * * * * * * * * * * * * * * * * *
 -076-|* * * * * * * * * * * * * * * * * * * * * * * * *
 -078-|* * * * * * * * * * * * * * * * * * * * * * * * *
 -080-|* * * * * * * * * * * * * * * * * * * * * * * * *
 -082-|* * * * * * * * * * * * * * * * * * * * * * * * *
 -084-|* * * * * * * * * * * * * * * * * * * * * * * * *
       -----------------Noise Strength------------------
       0 0 0 0 0 0 1 1 1 1 1 1 1 2 2 2 2 2 2 3 3 3 3 3 3
       1 3 4 6 7 9 0 2 3 5 6 8 9 1 2 4 5 7 8 0 1 3 4 6 7
       5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5
       0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0



Here's from outside :

ATL8
018    2009    0313A
***********  ONLINE DIAGNOSTICS  **********
LINK    TYPE            V.34
LINE    SPEED           24000/16800
SERIAL  SPEED           115200
ERROR CNTRL/COMPRESS    LAPM COMPRESSED
FALL    BACK/FORWARD    LOCALLY ENABLED
DATA    FORMAT          ASYNCHRONOUS
SYMBOL  RATE(SYMETRIC)  3429/3429
CARRIER FREQUENCY       1959/1959
TRELLIS ENCODER         4D 16-STATE/4D 16-STATE
PRECODING               ON/ON
LINE    TYPE            DIAL UP

RECV. SIGNAL LEVEL     -034.5 dBm
TRANS SIGNAL LEVEL     -020 dBm
NUMBER OF RETRAINS     002
ROUND TRIP DELAY       0002 ms    (MEANINGFUL IN V34 AND V32 MODE )
NEAR/FAR ECHO LEVEL    -033.0/060.0 dBm

ATL9
 -010-|
 -012-|
 -014-|
 -016-|    _ _ _ _ _ _ _
 -018-|  * * * * * * * * * * * _ _ * _   _
 -020-|  * * * * * * * * * * * * * * * * * _   _
 -022-|  * * * * * * * * * * * * * * * * * * * *   _
 -024-|  * * * * * * * * * * * * * * * * * * * * * *
 -026-|* * * * * * * * * * * * * * * * * * * * * * * *
 -028-|* * * * * * * * * * * * * * * * * * * * * * * * *
 -030-|* * * * * * * * * * * * * * * * * * * * * * * * *
 -032-|* * * * * * * * * * * * * * * * * * * * * * * * *
 -034-|* * * * * * * * * * * * * * * * * * * * * * * * *
 -036-|* * * * * * * * * * * * * * * * * * * * * * * * *
 -038-|* * * * * * * * * * * * * * * * * * * * * * * * *
 -040-|* * * * * * * * * * * * * * * * * * * * * * * * *
       ----------------Signal Strength------------------
       0 0 0 0 0 0 1 1 1 1 1 1 1 2 2 2 2 2 2 3 3 3 3 3 3
       1 3 4 6 7 9 0 2 3 5 6 8 9 1 2 4 5 7 8 0 1 3 4 6 7
       5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5
       0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

ATL10
 -007-|
 -009-|
 -011-|              SIGNAL to Noise Ratio
 -013-|_
 -015-|*
 -017-|* _                                           _ *
 -019-|* *                           _ _   * * _ * _ * *
 -021-|* * * * _ _ _ _ _ * _ * * * * * * * * * * * * * *
 -023-|* * * * * * * * * * * * * * * * * * * * * * * * *
 -025-|* * * * * * * * * * * * * * * * * * * * * * * * *
 -027-|* * * * * * * * * * * * * * * * * * * * * * * * *
 -029-|* * * * * * * * * * * * * * * * * * * * * * * * *
 -031-|* * * * * * * * * * * * * * * * * * * * * * * * *
 -033-|* * * * * * * * * * * * * * * * * * * * * * * * *
 -035-|* * * * * * * * * * * * * * * * * * * * * * * * *
 -037-|* * * * * * * * * * * * * * * * * * * * * * * * *
       ----------------------SNR------------------------
       0 0 0 0 0 0 1 1 1 1 1 1 1 2 2 2 2 2 2 3 3 3 3 3 3
       1 3 4 6 7 9 0 2 3 5 6 8 9 1 2 4 5 7 8 0 1 3 4 6 7
       5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5
       0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

ATL11
 -049-|
 -051-|
 -053-|
 -055-|_ _
 -057-|* *
 -059-|* *   _
 -061-|* * * * _   _ _ _ _ _ _ _ * * * * * * * * _
 -063-|* * * * * * * * * * * * * * * * * * * * * * * _ _
 -065-|* * * * * * * * * * * * * * * * * * * * * * * * *
 -067-|* * * * * * * * * * * * * * * * * * * * * * * * *
 -069-|* * * * * * * * * * * * * * * * * * * * * * * * *
 -071-|* * * * * * * * * * * * * * * * * * * * * * * * *
 -073-|* * * * * * * * * * * * * * * * * * * * * * * * *
 -075-|* * * * * * * * * * * * * * * * * * * * * * * * *
 -077-|* * * * * * * * * * * * * * * * * * * * * * * * *
 -079-|* * * * * * * * * * * * * * * * * * * * * * * * *
       -----------------Noise Strength------------------
       0 0 0 0 0 0 1 1 1 1 1 1 1 2 2 2 2 2 2 3 3 3 3 3 3
       1 3 4 6 7 9 0 2 3 5 6 8 9 1 2 4 5 7 8 0 1 3 4 6 7
       5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5
       0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0


I think the X axis is in (Hz) and the Y axis is in (dB).


I don't know what this parameters means. Can anybody help me?
I sent it to support & my earlier mail too, but they are 
very very slow or they are doesn't exist!

Is it possible: my Company's phone center has wrong
parameters for this modem ?

If the parameters of the phone center is wrong, is there
any solution for the problem with this modem?

I wait for Your answer!

Thank You!
 
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