Canon iR1200 Series Service Manual page 387

##674 [TX] In V.34 transmission, the procedure fails to move from
phase 3 or phase 4 to a control channel or later, causing
a T1 time-over condition
Remedy: (1) Ask the operator of the other party to increase the transmission
level so that the signal may be received correctly.
(2) Prohibit the V.8/V.34 procedure.
##675 [RX] In V.34 reception, the procedure fails to move from
phase 3 or phase 4 to a control channel or later, causing
a T1 time-over condition
Cause: In phase 3 or phase 4, the other party cannot receive the signal
correctly, and disconnect the line.
Remedy: (1) Increase the transmission level so that the other party may
receive the signal correctly.
(2) Prohibit the V.8/V.34 procedure.
Cause: In phase 3 or phase 4, the signal from the other party cannot be
received correctly.
Remedy: (1) Ask the operator of the other party to increase the transmission
level so that the signal may be received correctly.
(2) Prohibit the V.8/V.34 procedure.
##750 [TX] In ECM transmission, no significant signal can be
received after transmission of PPS-NULL, and the
allowed number of procedure signal re-transmissions
was exceeded
Cause: The line condition is poor, and the other party cannot receive PPS-
NULL correctly.
Remedy: 1. Increase the transmission level so that the other party may
receive PPS-NULL correctly.
2. Adjust the NL equalizer so that the other party may receive
PPS-NULL correctly.
3. Add an echo protect tone to the V.29 modem signal for
transmission.
Cause: The line condition is poor, and the significant signal cannot be
received correctly.
Remedy: Ask the operator of the other party to increase the transmission
level so that the signal may be received correctly.
T-14-63
T-14-64
Chapter 14
14-31