Lucent Technologies Release 6 manual DS1 Converter Circuit Pack LEDs, Span LEDs

DEFINITY Enterprise Communications Server Release 6	Issue 5
Installation and Test for Multi-Carrier Cabinets 555-230-112	May 1998

4Test the System

LED Indicators Page 4-15

DS1 Converter Circuit Pack LEDs

Eleven LEDs provide an indication of the state of the TN1654 DS1 Converter circuit pack and the T1/E1 facilities. The top group has the standard red, green and yellow LEDs. The red LED indicates an alarm condition and the green LED indicates testing in progress. The 4 SPAN LEDs indicate the status of the T1/E1 facilities. The four STATUS LEDs are currently unused and remain off.

The yellow LED is used to indicate the state of the fiber interface, the fiber channel, the control channel, and the communications link to the SPE in the following manner and order of priority. See Table 4-2.

Table 4-2. DS1 Converter Yellow LED Flashing States

LED on	LED off	Condition
0.1	0.1	Fiber out-of-frame or fiber loss of signal
second	second
0.5	0.5	In frame, fiber channel down. The fiber channel communicating
second	second	between the DS1 Converter and the other fiber endpoint (EI or
		SNI) is down.
1	1	In frame, control channel down. The control channel between the
second	second	2 DS1 Converters in the DS1 Converter complex is down.
2	0.2	No response from SPE. The SPE is not acknowledging
seconds	second	messages from the DS1 Converter or the communications link to
		the SPE is down.
solid on		DS1 Converter active. This is the normal state for an active DS1
		Converter.
	solid off	DS1 Converter standby. This is the normal state for a standby
		DS1 Converter in critical reliability systems (duplicated PNC).

SPAN LEDs

The 4 SPAN LEDs indicate the status of the 4 T1/E1 facilities. A SPAN LED is in one of the following states:

1.Solid on yellow: Facility is operational and alarm free.

2.Blinking yellow for 2 seconds, off 0.1 seconds: Facility is operational and alarm free AND is carrying the control channel (facility A or B only).

3.Solid on red: Facility is alarmed.

4.Solid off: Facility is not administered or has been busied out.