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Problem Resolution
COMMUNICATION ERROR CODES (Continued)
RECEIVE ERRORS (400 level codes continued) – Code numbers not listed are not used
CODE DESCRIPTION COMMENTS
422 Irrelevant response In non-ECM mode the command received was none of the
expected responses.
431 No local response for
remote interrupt
Set by a receiver when working in ECM mode. The post-
message voice request command was received and there was
no local line request during T3 time-out.
432 Phone disconnected The user has disconnected the line after the voice session
without continuing the fax session while in ECM mode.
441 Phone disconnected The user has disconnected the line after the voice session
without continuing the fax session while in ECM mode.
451 Phone disconnected The user has disconnected the line after the voice session
without continuing the fax session while in ECM mode.
461 Time-out T2 timer time-out waiting for a command following an RNR.
462 DCN received A DCN was received in a command frame that was received
in response to RNR. The local unit ran out of memory while
receiving. When the sender asked RR (receive ready?), your
unit sent RNR (receiver not ready). The sender will ask RR
for 1–4 minutes and when it gives up waiting, will send a
DCN (disconnect) back to you.
463 Line disconnect Receiver sent DCN and dropped the line after waiting 3 sec-
onds for a received frame from the transmitter or the line sig-
nal was gone more than 0.2 seconds.
464 Irrelevant response In ECM mode the command received was not expected.
471 Time-out T2 timer time-out waiting for a command following an RNR.
472 ERR transmitted Set by a receiver in ECM if a transmitter decides to abort re-
transmissions of current block/page/document after 4 unsuc-
cessful retries and possible fallbacks in modem speed.
473 DCN received A DCN was received in a command frame that was received
in response to RNR.
474 Line disconnect Receiver sent DCN and dropped the line after waiting 3 sec-
onds for a received frame from the transmitter or the line sig-
nal was gone more than 0.2 seconds.
475 Irrelevant response In ECM mode the command received was not expected.
481 Irrelevant response In ECM mode, the command received was not RR.
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