Paradyne 7924 manual Compatible Unit

Monitoring the Unit

V.35-Compatible Unit

The green PWR LED lights whenever power is applied to the board. Loop LEDs blink until the loop has been synchronized and then remain off.

T1 HDSL

TERMINAL

DTR DSR CTS RTS RXD TXD	Bk	PWR FAIL	Loop	A	Loop	B
	Loop

	7900
	97-15313
LED	Meaning
Loop Bk	ON: A loopback has been initiated for testing the equipment connected to
	this unit. Refer to Chapter 7, Testing, for more information.
PWR	ON: Power is applied to the unit.
FAIL	ON: The processor has halted and repairs are required.
Loop A	ON: HDSL Loop A has failed.
	Blinking: HDSL Loop A is synchronizing with the far-end unit (such as
	when the units are coming up after a reset). If the LED blinks for more
	than 60 seconds, loss of signal has occurred.
	Off: Loop A is enabled and synchronized.
Loop B	ON: HDSL Loop B has been disabled (only Loop A is in use) or has
	failed.
	Blinking: HDSL Loop B is synchronizing with the far-end unit (such as
	when the units are coming up after a reset). If the LED blinks for more
	than 60 seconds, loss of signal has occurred.
	Off: Loop B is enabled and synchronized.

7924-A2-GB20-30 October 1997 6-7