Panasonic KX-FP207FX-S Service Manual page 95

(Countermeasure by Changing the Interval Between CED and DIS)
<TX side signal>
2nd / 3rd DCS / Training
2nd / 3rd EOP / EOM / MPS
delayed DCS
12.3.3.1.6. The unit can copy, but the transmission and reception image are incorrect
(Long distance or international communication operation)
This symptom highly depends on the transmission and reception capability of the other FAX unit and the line conditions.
The countermeasures for this unit are shown below.
Transmission Operation:
Set the transmitting speed to 4800BPS (service mode: code No. 717) or select the overseas mode.
Reception Operation:
If 80% or more of the reception is incorrect, set the receiving speed to 4800BPS. (Service mode: code No. 718)
• Refer to Service Function Table (P.63).
Fig. c
& delayed CFR / FTT
& delayed MCF / PIP / PIN / RTP / RTN
& 2nd / 3rd / --- DIS
(Countermeasure by Ignoring the 1st DIS)
<RX side signal>
(Fig. e)
95
KX-FP207FX-S/FP218FX-S
Fig. d
<Countermeasure>
at TX side
at TX side
at RX side