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CHAPTER 5 OPERATION TEST
Interoffice Transmission Line Test
NEAX2000 IVS
2
ISDN System Manual
ND-70919 (E), Issue 1.0
Page 191
Table 5-1 Alarm Indications on 24DTI
LED
LED INDICATION FAULT
NORMAL FAULT CAUSE ACTION
RUN Flash
(120 IPM)
On or Off Abnormal
operation of DTI
card
Confirm the programming data:
CM05, CM07 YY=01.
Check to see if the SENS
switch is set as per the AP
number (04-15, 20-31)
assigned by CM05.
Reset the MB switch
(Down→Up→Down)
If the fault cannot be cleared,
replace the card.
CRC Off On Bit Error Rate
exceeds the
predetermined
value
Check the receive line and
external equipment.
Replace the remote DTI card.
PCM Off On No PCM signals
arrive from the
distant office
Check to see if the DTI cable is
correctly connected.
Plug and unplug the DTI card.
Repeat this two or three times.
FRM Off On Frame Alignment
signals from the
distant office can-
not be received
Check the receive line and
external equipment.
Replace the remote DTI card.
RMT Off On Frame Alignment
signals cannot be
sent to the
remote PBX
Check the transmission line
and external equipment.
Replace the DTI card.
AIS Off On Remote PBX is in
the loop-back test
Check the switch settings of
the remote DTI card.
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