User Guide
DEFINITY Enterprise Communications Server Release 5
Maintenance and Test for R5vs/si 
555-230-123 
Issue 1
April 1997
Maintenance Object Repair Procedures 
Page 10-401DATA-CHL (Network Control Data Channel) 
10
40
41 
2000 
2003 
2004
(cont’d.)
6. If the result of Test #110 is either PASS or FAIL and the result of test #111 
is FAIL for the target DATA-CHL, 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.
■ Issue the test data-module <ext> long for the target DATA-CHL. 
Note the test results for Test #107 and #108.
a. If the result of Test #107 is FAIL, then the TN777 Network 
Control circuit pack is defective.
■ 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.
■ Repeat the test.
b. If the result of Test #107 is PASS and the result of Test #108 is 
FAIL, then the DATA-CON is defective.
■ 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.
■ Repeat the test.
40
41 
2000 
2003 
2004
(cont’d.)
If the result of Test #107 is PASS and the result of Test #108 is PASS, then the 
target DATA-CHL is defective.
■ Issue the remove data-module <ext> for the target DATA-CHL to 
remove it from operation.
■ 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.
7. Restore any busied out CDR, Journal Printer, System Printer, or PMS 
Link to service before moving on to another activity.
Table 10-110. TEST #109 Data Channel Remote Maintenance Loop Around Test  — Continued
Error 
Code
Test 
Result Description/Recommendation
Continued on next page










