User manual

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6vs/si
555-230-127
Issue 1
August 1997
Maintenance Object Repair Procedures
Page 10-320CO-TRK (CO Trunk)
10
7, FAIL The conference capabilities of the port failed (Error Code 7).
129, The reflective 404-Hz Tone Test failed. No transmission was detected to or
from the port (Error Code 129).
131, or The reflective 1004-Hz Tone Test failed. No transmission was detected to or
from the port (Error Code 131).
133 The reflective 2804-Hz Tone Test failed. No transmission was detected to or
from the port (Error Code 133).
FAULT ISOLATION: Proceed as follows unless power or tone problems are
suspected (see notes on the next page).
1. To make sure the problem is on-board, disconnect the port from the CO
and retry the test. Coordinate this with the CO, or do it after busy hours;
otherwise, the CO may put the connection out of service.
2. If the retry fails, replace the circuit pack.
3. If the retry passes and no troubles have been reported, disable the test. If
the retry passes and troubles have been reported, refer the problem to
the CO.
NOTE:
If the loop around and conference circuit test fails for all ports on a
circuit pack, a -5 volt power problem is indicated. If a TN736 or TN752
power unit circuit pack is present, either the 631DB AC power unit or
the 676B DC power unit may be defective. (The 631DB power unit is
used in a medium cabinet powered by an AC source. The 645B power
unit is used in a medium cabinet powered by a DC power source.) The
system may contain a TN736 or TN752 power unit circuit pack or a
631DB AC power unit, but not both types of power units. To investigate
problems with a 631DB AC power unit, refer to the CARR-POW (carrier
port power unit for AC-powered systems) Maintenance documentation.
To investigate problems with a 645B DC power unit, refer to the
CARR-POW (carrier port power unit for DC-powered systems)
Maintenance documentation. If a red LED on TN736 or TN752 power
unit circuit pack is on, replace the pack. If the test fails on more than 1
port, check for errors on the TONE-BD or the TONE-PT. If errors, take
appropriate actions. When the tone errors are cleared, rerun the test. If
the test fails again, see FAULT ISOLATION above.
PASS CO Trunk Loop Around and Conference Test is successful. User-reported
troubles on this port should be investigated by using other port tests and by
examining trunk or external wiring.
Table 10-104. TEST #33 Loop Around and
Conference Circuit Test — Continued
Error
Code
Test
Result Description/ Recommendation
Continued on next page