DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
Maintenance Object Repair Procedures
9-436CO-TRK (Analog CO Trunk)
9
CO Demand Diagnostic Test (#3)
For ground start trunks, port circuit pack relays are operated and checks are
made to see if the port can detect and apply ground on the Tip lead. This test
also verifies that there is no external ground on the Ring lead. In the absence of
other failures, the circuit pack should be replaced only if this test fails with the CO
line disconnected.
For the TN2147, this test also checks the on-board programmable transmission
circuits that allow the circuit pack to support transmission characteristics of
several different countries.
2002 FAIL Seizure portion of test failed due to hardware problem. Fault is usually
caused by a disconnected trunk.
1. If the CO Demand Diagnostic Test (#3) also failed, display the Hardware
Error Log. If the CO Demand Diagnostic Test failed because it could not
detect ground (indicated by Error Type 1281 in the Hardware Error Log)
AND Error Type 3329 or 3585 appears in the Hardware Error Log (with
the same last occurred time as Error Type 1281 and 1537), replace the
circuit pack.
2. Check trunk wiring to ensure good connection; repeat test if wiring
correction made.
3. Locate another identical CO trunk and swap its wiring with one under
test. Repeat test on both trunks and determine if problem follows trunk
or remains at original port. If problem follows trunk, refer problem to CO.
If problem remains at port, replace circuit pack and repeat test.
1009 PASS Detected tone was not pure dial tone. No action required.
PASS Trunk was seized, and dial tone was detected. User-reported troubles on
this port should be investigated by using other port tests and by examining
trunk or external wiring.
0NO
BOARD
The test could not relate the internal ID to the port.
1. Check to ensure that the board translations are correct. Translate the
board, if necessary.
2. Issue the busyout board command.
3. Issue the reset board command.
4. Issue the release busy board command.
5. Issue the test board command. This should re-establish the linkage
between the internal ID and the port.
Table 9-181. TEST #0 Dial Tone Test — Continued
Error
Code
Te st
Result Description/ Recommendation
Continued on next page
