User manual

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6vs/si
555-230-127
Issue 1
August 1997
Maintenance Object Repair Procedures
Page 10-1378TIE-TRK (Tie 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.
More information continues on the next page.
7,
129,
131, or
133
(cont’d.)
FAIL
(cont’d.)
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.
Table 10-477. TEST #33 Loop Around and
Conference Circuit Test — Continued
Error
Code
Test
Result Description/ Recommendation
Continued on next page