User manual
DEFINITY Enterprise Communications Server Release 6
Maintenance for R6vs/si 
555-230-127  
Issue 1
August 1997
Maintenance Object Repair Procedures 
Page 10-371DATA-CHL (Network Control Data Channel) 
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2003 
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(cont’d.)
4. If the result of Test #111 is FAIL, then the most likely problem is that the 
target DATA-CHL is defective, the DATA-CON is defective, or the TN777 
Network Control circuit pack is defective. Busyout all functions that are 
using the Network Control Data Channels (DATA-CHLs).
!
CAUTION:
All functions must be busied out because Test #107 is destructive and 
terminates all established connections over the DATA-CHLs.
a. Issue the test data-module <ext> long command for the target 
DATA-CHL. Note the test results for Tests #107 and #108.
1. If the result of Test #107 is FAIL, then the TN777 Network Control 
circuit pack is defective.
(a).Replace the Network Control circuit pack immediately. After 
the Network Control circuit pack has been replaced, its 
Time-of-Day clock must be set using the set time 
command.
(b).Repeat the test.
2. If the result of Test #107 is PASS and the result of Test #108 is 
FAIL, then the DATA-CON is defective.
(a).Although all DATA-CHLs are unusable, the SW-CTL is still 
operational. Based on the customer’s use of DATA-CHLs, 
replace the Network Control circuit pack at the customer’s 
convenience. After the Network Control circuit pack has 
been replaced, its Time-of-Day clock must be set using the 
set time command.
(b).Repeat the test.
3. If the result of Test #107 is PASS and the result of Test #108 is 
PASS, then the target DATA-CHL is defective.
(a).Issue the remove data-module <ext> command for the 
target DATA-CHL to remove it from operation.
(b).Replace the Network Control circuit pack at your earliest 
convenience. After the Network Control circuit pack has 
been replaced, its Time-of-Day clock must be set using the 
set time command.
5. Restore any busied out function (PRI-CDR/SEC-CDR, SYS-PRNT, 
PMS-PRNT/JNL-PRNT, PMS-LINK) to service before moving on to 
another activity.
Table 10-118. TEST #110 Data Channel Crosstalk Test  — Continued
Error 
Code
Test 
Result Description/Recommendation
Continued on next page










