DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126 Issue 4
June 1999
Maintenance Object Repair Procedures
9-250ATM-SYNC (ATM Synchronization)
9
Notes:
a. Error Type 1: problem with the primary DS1 reference. It is cleared when
the primary reference is restored. The following steps should g ive an
indication of the source of t he problem:
1. Check if the primary DS1 interface c ircuit pack is inser ted in the
carrier with the list configuration board UUCSS command.
2. Verify that the administered primary reference matc hes the DS1
reference from the network synchronization plan.
3. Test the primary DS1 interface circuit pack with th e test board
UUCSS long command. Check the Error Log for DS1-BD or
UDS1-BD errors and refer to the DS1-BD or UDS1-BD (DS1
Interface Circuit Pack or UDS1 Interface Circ uit Pack) Maintenance
documentation to resolve any errors assoc iated with the primary
DS1 (DS1 or UDS1) interface circuit pack. If the only errors ag ainst
DS1-BD or UDS1-BD are slip errors, then follow the procedures
described i n the troubleshooting section ab ove. If no errors are
listed in the Error Log for the primary DS1 interface circuit pack,
continue with the following step s.
4. Test the active Tone-Clock circuit pack in the master port n etwork
with the test tone-clock UUC long command. Check the Error Log
for TDM-CLK errors and verify that TDM Bus Clock Test #148 (TDM
Bus Clock Circuit Status Inquiry Test) passes successfully. If Test
#148 fails with an Error Code 2 through 32, refer to the TDM-CLK
(TDM Bus Clock) Maintenance doc umentation to resolve the
problem.
b. Error Type 257: problem with the secondary DS1 reference. It is cleared
when the secondary reference is restored . Refer to note (a) to resolve this
error substituting secondary for primary in the preced ing resolution
steps.
c. Error Type 513: the ATM switch clock is inferred to be prov iding the timing
source for the system. The primary and sec ondary (if administered ) are
not providing a valid timing signal. Investig ate errors 1 and 257 to resolve
this error.
d. Error Type 1537: over half of the DS1s that are administered with slip
detection enabled through the Slip Detection? field set to y are
experiencing slip s.
e. Error Type 1793: inferred excessive switching of sy stem synchronization
references has occurred . When this error occurs, it is inferred that the ATM
switch clock has b ecome the synchronization reference for the system.
1. Check for timing loops and resolve any loops that exist.
2. Test the active Tone-Clock circuit pack in the master port n etwork
with the test tone-clock UUC long command. Check the Error Log
for TDM-CLK errors and verify that TDM Bus Clock Test #148 (TDM