asterisk users - Aug 2004 - SpanDSP - Training failed error / timing problem

I am having a problem with SpanDSP.  What happens is when I send a fax
to SpanDSP the fax message seems to fail in the training phase.  I think
it's a timing error, however I have no idea about how to rectify the
problem. I have included a copy of the log below.  I am using a Digium
TDM-400P card with 2 x FXO ports and 2 x FXS ports.  The fax is
connected to one of the FXS ports (Zap3).  The outgoing call dials out
on Zap2 and is received by SpanDSP on Zap1. 

I'm not too sure what the Zaptel device is using as a timing source or
how to alter it in order to tune the carrier frequency.

If anyone has any ideas I'd be very appreciative of your assistance.

Many thanks,
Stephen.

    -- Starting simple switch on 'Zap/3-1'
    -- Executing Dial("Zap/3-1", "Zap/2/98824928") in new
stack
    -- Called 2/98824928
    -- Zap/2-1 answered Zap/3-1
    -- Attempting native bridge of Zap/3-1 and Zap/2-1
    -- Starting simple switch on 'Zap/1-1'
Aug 17 10:26:57 NOTICE[131088]: chan_zap.c:4998 ss_thread: Got event 2
(Ring/Answered)...
Aug 17 10:27:00 NOTICE[131088]: chan_zap.c:4998 ss_thread: Got event 2
(Ring/Answered)...
    -- Executing RxFAX("Zap/1-1",
"/var/spool/asterisk/incoming/test.tif") in new stack
Changed from phase 0 to 1
Slow carrier up
Slow carrier down
Slow carrier up
Slow carrier down
Start receiving document
Changed from phase 1 to 4
Sending ident
>>> CSI: 40 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20
DIS:
Preferred octets: 256
Can receive fax
Supported data signalling rates: V.27ter and V.29
R8x7.7lines/mm and/or 200x200pels/25.4mm OK
2D coding OK
Scan line length: 215mm
Recording length: A4 (297mm)
Receiver's minimum scan line time: 0ms at 3.85 l/mm: T7.7 = T3.85
R8x15.4lines/mm OK
Minimum scan line time for higher resolutions: T15.4 =
T7.7
>>> DIS: 80 00 ce f0 80 80 01
HDLC underflow in state 9
Changed from phase 4 to 3
Slow carrier up
<<< TSI: 43 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 78 61 46
TSI without final frame tag
Remote fax gave TSI as: "Fax                 "
<<< DCS: 83 00 c6 70
DCS with final frame tag
In state 9
DCS:
Can receive fax
Selected data signalling rate: V.29, 9600bps
R8x7.7lines/mm and/or 200x200pels/25.4mm OK
2D coding OK
Scan line length: 215mm
Recording length: A4 (297mm)
Minimum scan line time: 0ms
Get at 9600
Changed from phase 3 to 5
Fast carrier up
Coarse carrier frequency 1722.49 (4)
Training error 697.606603
Training failed (convergence failed)
Fast carrier training failed
Fast carrier down
Fast carrier up
Coarse carrier frequency 1593.48 (6)
Training error 692.982686
Training failed (convergence failed)
Fast carrier training failed
Fast carrier down
Fast carrier up
Coarse carrier frequency 1742.92 (4)
Training error 671.337114
Training failed (convergence failed)
Fast carrier training failed
Fast carrier down
Fast carrier up
Fast carrier down
    -- Hungup 'Zap/2-1'
  == Spawn extension (fax-out, 98824928, 1) exited non-zero on 'Zap/3-1'
    -- Executing Dial("Zap/3-1", "Zap/2/h") in new stack
Aug 17 10:27:31 NOTICE[122895]: app_dial.c:689 dial_exec: Unable to
create channel of type 'Zap'
  == Everyone is busy/congested at this time
    -- Executing Hangup("Zap/3-1", "") in new stack
  == Spawn extension (fax-out, h, 102) exited non-zero on 'Zap/3-1'
    -- Hungup 'Zap/3-1'