Nortel DMS-100 Series Maintenance Manual page 193

Supported Star Remote System line diagnostic tests
The following table lists the diagnostic tests performed as part of the line card
diagnostics initiated using the LTP level DIAG command according to the line
type, whether POTS or proprietary phone (P-phone).
Table 6-15 Line diagnostics functionality for POTS and P-phone lines (Sheet 1
of 2)
Test
Transhybrid loss
Attenuation pad
Noise
Loop signal at line card (note 1)
Loop signal at keyset
Add-on and extension
Flux cancellation
Loop detector
Equalization current detector
Buffer full flag
Battery feed resistor
Reversal relay (note 2)
+48 V reversal relay (note 3)
Ground start relay
Cutoff relay
Ring and supervision (note 4)
Note 1: This test requires the NT6X99AA IBERT line card.
Note 2: This test is for the NT6X18BA.
Note 3:
This test is for the NT6X18AB.
Note 4: This test requires that table OFCOPT parameter NRTEST is set to Y.
Note 5: This test is only run if one of the prior tests failed.
Star Remote System user interface 6-33
DMS-100 Family NA100 Star Remote System XPM15 and up
Line card
type
POTS P-Phone
Y
Y
Y Y
Y
Y
Y
Y Y
Y
Y
Y
Y Y
Y
Y
Y
Y Y
Y