D163 52 SM
Code Meaning Suggested Cause/Action
0-22 The signal from the other end
was interrupted for more than
the acceptable modem carrier
drop time (default: 200 ms)
Check the line connection.
Replace the FCU.
Defective remote terminal.
Check for line noise or other line problems.
Try adjusting the acceptable modem
carrier drop time.
Cross reference
Acceptable modem carrier drop time - G3
Switch 0A, bits 0 and 1
0-23 Too many errors during
reception
Check the line connection.
Replace the 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
0-29 Data block format failure in
ECM reception
Check for line noise or other line problems.
Check the FCU - NCU connectors.
Replace the NCU or FCU.
0-30 The other terminal did not
reply to NSS(A) in AI short
protocol mode
Check the line connection.
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.