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DEFINITY Enterprise Communications Server Release 6
Maintenance for R6vs/si
555-230-127
Issue 1
August 1997
Maintenance Object Repair Procedures
Page 10-1207SW-CTL (Switch Control)
10
Time of Day Clock Test (#95)
The short term accuracy of the Time of Day (TIME-DAY) clock is tested. The test
reads the clock once, waits a short time, and reads the clock again. The second
reading of the clock must be within certain limits relative to the first reading for
the test to pass. The display time command can be used to display the current
setting of the TIME-DAY clock.
0 FAIL The Switch Control cannot communicate on the TDM Bus control channel.
The customer probably cannot make or receive calls.
1. Run the Short Test Sequence several times to make sure this failure is
occurring consistently, run the Long Test Sequence to reset the Switch
Control. Sometimes, running the Long Test Sequence may clear the
problem. Remember that the Long Test Sequence is destructive.
Placing and receiving calls is affected for several seconds.
2. If there are no TDM Bus alarms against the Standby TDM Bus, switch
the control channel from its current bus to the Standby bus. If this test
passes on the new bus, investigate the possibility of TDM Bus failures.
If the test fails even after the control channel is switched to the standby
TDM Bus, proceed to Step 3 or 4.
3. If the system is still able to process calls, replace the Netcon circuit
pack at the customer’s convenience (Standard system) or right away
(High or Critical Reliability system).
4. If calls cannot be made, replace the Netcon circuit pack immediately.
5. The procedure for replacing the Netcon circuit pack in a High or Critical
Reliability system is described in Chapter 6, ‘‘
Reliability Systems: A
Maintenance Aid’’. The procedure for doing the same in systems
without High or Critical Reliability is described in Chapter 5, ‘‘
Routine
Maintenance Procedures’’.
PASS The Switch Control can communicate with the port circuit packs over the
TDM Bus.
Table 10-416. TEST #94 Control Channel Transmission Test — Continued
Error
Code
Test
Result Description/ Recommendation
Continued on next page