Avaya BCM50 Installation Manual Page 67

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Chapter 3 Viewing the BCM50 system LEDs 67
Installation and Maintenance Guide
The table MBM LED descriptions on page 67 describes the possible MBM LED states.
DTM LEDs
The DTM has additional LEDs that are not on most other MBMs. The figure DTM LEDs on page
67 shows the location of the DTM LEDs.
Figure 31 DTM LEDs
The table DTM LED functions on page 67 describes the functions of the DTM LEDs.
Table 14 MBM LED descriptions
Power Status Description
Off Off The MBM has no power, or a failure occurred on the MBM power converter.
On Off BCM50 to expansion unit failure or system initialization.
On Blinking Hardware is working, but an operational problem exists such as:
no link to the main unit is detected
frame alignment is lost on messages from the main unit
bandwidth not allocated
MBM is in maintenance state
MBM is in download state (GASM, GATM4/GATM8)
Blinking Blinking The MBM has power, but a hardware problem exists such as:
partial failure of power converter
thermal overload
fan failure
On On The MBM is ready to operate.
Table 15 DTM LED functions (Sheet 1 of 2)
LED Status Descriptions
Power See “Media bay module LEDs (expansion units only)” for details.
Status See “Media bay module LEDs (expansion units only)” for details.
Power LED
Status LED
In service LED
Loopback test LED
Receive LEDs
Transmit LEDs
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