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DEFINITY ECS Release 8.2 Maintenance for R8.2csi
555-233-119 Issue 1
April 2000
Maintenance Objects
3-1107TIE-TRK (Tie Trunk)
3
Figure 3-44. Tie Trunk Interactions
The number of tests to be implemented for Tie Trunk maintenance depends upon
the TIE-TRK circuit packs involved. The test are as follows:
1. NPE Crosstalk Test—Verifies the switch connection operation of the circuit
pack. It verifies that the trunk circuitry talks only on the selected time slot
on the TDM Bus and that it never crosses over to time slots reserved for
other connections.
2. Loop Around and Conference Circuit Test—Verifies the transmission
operation of the circuit pack. It verifies that signals are transmitted to and
from each port (Loop Around within the port), and it tests the conference
capabilities of all ports.
This test may fail due to noise induced by adjacent electric power lines.
Customers having this problem should resolve it with their local power
company. To temporarily alleviate the alarm caused by the failure of this
test, the test may be disabled from trunk administration test field.
3. Several seizure tests, including the following:
— Tie Trunk Seizure Test verifies the seizure capabilities of the circuit
pack. For the TN2140B circuit pack, this test activates the M lead
and checks for a response from the distant end within 10 seconds.
This test ABORTS on trunk ports administered as access
endpoints.
TIE
TRUNK
PORT
PBX
TIE
TRUNK
PBX
TIE TRUNK
PORT
CIRCUIT
PACK
CIRCUIT
PACK