– 382 – NWA-008853-001 Rev.3.0
97ch4001.fm
Lamp Indications
NOTE: The following table shows the lamps of PN-DTA card used for T1/E1 interface.
×: Used –: Not used
LAMP
NAME
COLOR FUNCTION
RUN Green Flashes at 120 IPM while this card is operating normally.
LC Green Remains lit when communications are normally ongoing with the com-
mon signaling channel data links connected.
LPB Green Remains lit when loopback test is in progress.
PCM Red Remains lit when detecting PCM signal loss.
MFRM Red Remains lit when detecting Multi-Frame Alignment signal loss on time
solt 16 (Only for E1).
FRM Red Remains lit when detecting Frame Alignment signal loss.
MRMT Red Remains lit when receiving the alarm from a distant office because
Multi-Frame Alignment signal loss has been detected at the distant
office (Only for E1).
RMT Red Remains lit when receiving Frame Alignment signal loss alarm from a
distant office.
CRC Red Remains lit when detecting Cyclic Redundancy Checking (CRC) errors
(Only for T1).
AIS Red Remains lit when a pattern of consecutive “1” is received.
The distant office transmits this signal for a loopback test.
BL Red B channel status
ON : More than 10 channels are busy
OFF : All channels are idle
Flash (60 IPM) : Only one channel is busy
Flash (120 IPM): 2 through 10 channels are busy
LAMP CCT (T1) CCT (E1) LAMP CCT (T1) CCT (E1)
RUN ×
×
MRMT
–
×
LC ×
×
RMT ××
LPB ×
×
CRC × –
PCM ×
×
AIS ××
MFRM –
×
BL ××
FRM ×
×
JULY/01/2006
PN-DTA (CCT)
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