Lucent Technologies DEFINITY Enterprise Communications Server Release 6 Instructions Manual

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6r Volumes 1 & 2  555-230-126  Issue 2
January 1998
LED Indicators 
Page 7-3 Circuit Pack LEDs 
7
Circuit Pack LEDs
Each circuit pack typically has three LEDs on the front panel visible at the front of 
the carrier, there are some exceptions to this (for example DS1CONV circuit 
pack) that are covered later in this section. On most circuit packs, the LEDs 
indicate the following when lit. Exceptions to these indications are explained in...

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6r Volumes 1 & 2  555-230-126  Issue 2
January 1998
LED Indicators 
Page 7-4 Expansion Interface Circuit Pack LEDs 
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nMisconnected optical fiber cables may cause several circuit packs to 
alarm.
nPacket bus faults can cause several port circuit packs to display red 
LEDs.
If a circuit pack has had at least five minutes to be initialized, and the red LED is 
lit without an associated alarm in the Alarm Log, the circuit pack may not be...

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6r Volumes 1 & 2  555-230-126  Issue 2
January 1998
LED Indicators 
Page 7-5 Maintenance Circuit Pack LEDs 
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The yellow LED displays various flashing patterns to provide status information 
useful in isolating faults in the fiber link and other components connected to the 
fiber link. Table 7-1
 illustrates the EI yellow LED states.
Maintenance Circuit Pack LEDs
TN1648 System Access-Maintenance (SYSAM) and TN775 EPN Maintenance...

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6r Volumes 1 & 2  555-230-126  Issue 2
January 1998
LED Indicators 
Page 7-6 Maintenance Circuit Pack LEDs 
7
Only those on the active SYSAM are updated with the current system status. The 
yellow LED that is third from the top indicates which SYSAM is active.
These LEDS are illustrated on the following page.MAJOR (red) flashing Major Alarm against a component in 
the same cabinet, (PPN for SYSAM, 
and EPN for MAINT).
MAJOR (red) solid...

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6r Volumes 1 & 2  555-230-126  Issue 2
January 1998
LED Indicators 
Page 7-7 Duplication Interface Circuit Pack LEDs 
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Figure 7-1. SYSAM and EPN Maintenance Circuit Pack LEDs
Duplication Interface Circuit Pack 
LEDs
In systems with duplicated SPEs, (High Reliability and Critical Reliability), there 
are two Duplication Interface UN330B circuit packs. One is located in carrier A 
and one in carrier B of the PPN. Each circuit pack has...

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6r Volumes 1 & 2  555-230-126  Issue 2
January 1998
LED Indicators 
Page 7-8 Switch Node Interface LEDs 
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Figure 7-2. Duplication Interface Circuit Pack LEDs
Switch Node Interface LEDs
The Switch Node Interface (SNI) TN573 circuit pack has the standard red, green, 
and yellow LEDs. The red and green LEDs have the traditional meaning, where 
red indicates an alarm condition, and green indicates testing in progress.
The yellow LED...

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6r Volumes 1 & 2  555-230-126  Issue 2
January 1998
LED Indicators 
Page 7-9 DS1 CONV (TN574/TN1654) Circuit Pack LEDs 
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DS1 CONV (TN574/TN1654) Circuit 
Pack LEDs
The TN574 and the TN1654 LEDs provide an indication of the state of the DS1 
Converter and facilities, and are covered in the following sections of this 
document.
TN574 Circuit Pack LEDs
Seven LEDs provide an indication of the state of the DS1 Converter (DS1 CONV) 
TN574...

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6r Volumes 1 & 2  555-230-126  Issue 2
January 1998
LED Indicators 
Page 7-10 DS1 CONV (TN574/TN1654) Circuit Pack LEDs 
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The yellow LED is used to indicate the state of the Fiber Interface, the Fiber 
Channel, and the DS1 channel in the following manner and order of priority.
DS1 Facility LEDs
Below the three standard LEDs on the DS1C circuit pack are four green LEDs 
used to indicate whether a receive signal is present for each of...

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6r Volumes 1 & 2  555-230-126  Issue 2
January 1998
LED Indicators 
Page 7-11 DS1 CONV (TN574/TN1654) Circuit Pack LEDs 
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Figure 7-3. TN574 DS1C Circuit Pack LEDs
TN1654 Circuit Pack LEDs
The TN1654 DS1CONV board has 11 LEDs on its faceplate. The top 3 system 
standard LEDs indicate the state of the DS1CONV board. These LEDs are under 
firmware control until the board has established a link to the SPE via the EI or SNI. 
Once the link...

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6r Volumes 1 & 2  555-230-126  Issue 2
January 1998
LED Indicators 
Page 7-12 DS1 CONV (TN574/TN1654) Circuit Pack LEDs 
7
2. If the Fiber Channel is down (DS1 Converter circuit pack/fiber endpoint 
communications), the yellow LED will flash at a 1 Hz rate (on for 500 ms, 
off for 500 ms).
3. If the DS1 Control Channel is down between the two DS1CONVs in the 
DS1CONV Complex, the yellow LED will pulse at a 0.5 Hz rate (on for 1 
second,...