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10-18 Installation and Maintenance Volume
Octel 200/300 S.4.1 PB60019−01
7. Check the LEDs on the front of the card for trunk problems. The LEDs have the same information as
the status screens although without as much detail. However, if you are unable to get terminal access
to the system, the LEDs might be a good alternative. The meanings of the LEDs are as follows. For
further help, contact Technical Support.
LED
Meaning
Red boot (top) Apcode is initializing
Green Power DTIC has power
Red 1 (top) Loss of signal on trunk (LOS)
Red 2 Loss of frame on trunk (LOF)
Yellow 3 Remote alarm indication (RAI)
Yellow 4 “Other” trunk alarm
Yellow 5 Alarm history
Green 6 (bottom) One or more ports off hook
. All red LEDs should be OFF when the card is correctly initialized. If LEDs Red 1 and Red 2
are ON, it indicates that there is no incoming clock, possibly due to incorrect cabling.
Call into System, Phone Rings but Is Never Answered
This problem is unlikely, but it could be caused by the DTIC being operational but not being allowed to
report ringing to the main system. A possible source of this problem is that the signaling method for the
DTIC is not set to the correct value. The signaling method is set in LSP Table parameter 24. If the
problem occurs, contact Technical Support.
System Answers but Voice Quality Is Poor
This problem probably means that the PCM encoding law is incorrectly set. Check whether System Parameter
198 — PCM ENCODING FOR THE SYSTEM, is set correctly. If not, change the value as appropriate.
System Answers but Pops or Buzzes
This problem probably means that the setting of the DTIC as a clock sync source is not correct. If only
one DTIC is configured in the system, check that the DTIC is configured as the primary clock sync
source. If the DTIC is not configured as the primary clock sync source and the PBX has another clock,
the clock rates may not be the same.
If more than one DTIC is configured in the system, check that the DTIC is configured as the primary
clock sync source and also check that the PBX is using the same clock rate.
Modem Connection Has Garbage Characters
This problem occurs when log on is via a modem connection and the characters that appear on the screen
are random characters and digits.
The source of the problem and solution are the same as given for the System Answers But Pops or Buzzes.