Error Codes
D361/D510 24 SM
Code Meaning Suggested Cause/Action
0-23
Too many errors during
reception
Check the line connection.
Check the FCU - NCU connectors.
Replace the NCU or FCU.
Defective remote terminal.
Check for line noise or other line problems.
Try asking the other end to adjust their tx level.
Try adjusting the rx cable equalizer setting
and/or rx error criteria.
Cross reference
Rx cable equalizer - G3 Switch 07 (PSTN)
Rx error criteria - Communication Switch 02,
bits 0 and 1
0-30
The other terminal did
not reply to NSS(A) in AI
short protocol mode
Check the line connection.
Check the FCU - NCU connectors.
Try adjusting the tx level and/or cable
equalizer settings.
The other terminal may not be compatible.
Cross reference
Dedicated tx parameters - Section 4
0-32
The other terminal sent a
DCS, which contained
functions that the
receiving machine
cannot handle.
Check the protocol dump list.
Ask the other party to contact the
manufacturer.
0-33
The data reception (not
ECM) is not completed
within 10 minutes.
Check the line connection.
The other terminal may have a defective
modem/FCU.
0-52
Polarity changed during
communication
Check the line connection.
Retry the communication.
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