2L6/2N6/2N5/2N4-7
1-4-312
(2-7) U017XX error code table: V.34 transmission
U01700/E01700:A communication error that occurs at the transmitting unit in the period after transmission of
INFO0 before entering phase 3 (primary channel equivalent device training). For example,
INFO0/A/Abar (B/Bbar, for polling transmission)/INFOh was not detected.
U01720/E01720:A communication error that occurs at the transmitting unit in the period after initiating the
control channel before entering the T.30 process. For example, PPh/ALT/MPh/E was not
detected.
U01721/E01721:In the absence of a common communication speed between units (including when an impos-
sible combination of communication speed and symbol speed occurs) after MPh exchange;
1) a DCN signal was received from the destination unit, and the line was cut; or 2) a DIS
(NSF, CSI) signal was received from the destination unit and, in response to the signal, the
unit transmitted a DCN signal, and the line was cut.
(2-8) U018XX error code table: V.34 reception
U01800/E01800:A communication error that occurs at the receiver unit in the period after transmission of
INFO0 before entering phase 3 (primary channel equivalent device training). For example,
INFO0/B/Bbar (A/Abar, for polling reception)/probing tone was not detected.
U01810/E01810:A communication error that occurs at the receiver unit in phase 3 (primary channel equiva-
lent device training). For example, S/Sbar/PP/TRN was not detected.
U01820/E01820:A communication error that occurs at the receiver unit in the period after initiating the control
channel before entering the T.30 process. For example, PPh/ALT/MPh/E was not detected.
U01821/E01821:In the absence of a common communication speed between units (including when an impos-
sible combination of communication speed and symbol speed occurs) after MPh exchange, a
DCN signal was transmitted to the destination unit and the line was cut.
Error code Description
U01700/E01700 A communication error occurred in phase 2 (line probing).
U01720/E01720 A communication error occurred in phase 4 (modem parameter exchange).
U01721/E01721 Operation was interrupted due to the absence of a common communication speed
between units.
Error code Description
U01800/E01800 A communication error occurred in phase 2 (line probing).
U01810/E01810 A communication error occurred in phase 3 (primary channel equivalent device training).
U01820/E01820 A communication error occurred in phase 4 (modem parameter exchange).
U01821/E01821 Operation was interrupted due to the absence of a common communication speed
between units.
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