Patton electronic 2707/I user manual E1 Link

	Table 2: LED descriptions
LED	Description
E1 Link	(Active Green) Solid green (On) indicates that the end to
	end E1 Link is up, signifying that the link is active. The E1
	Link LED is Off when the link is down.
10BT Link	(Active Green) Solid green indicates that the 10Base-T
	Ethernet interface has detected a valid SQE heartbeat,
	signifying a valid 10Base-T connection.
Status	Blinks yellow from one to eleven times to indicate system
	status. Each pulse pattern is separated by a 2 second
	“off” period. Greater pulse patterns have higher priority
	(buffer saturation has greater priority than an empty MAC
	table). Valid system statuses are:
	1 pulse—system status is okay
	2 pulses —no MAC entries in the MAC Address Table
	3 pulses—Clear to Send (CTS) or Carrier Detect (DCD)
	from base unit are not asserted
	4 pulses—IM1/I buffer is saturated
	5 pulses —WAN receive frame(s) too large
	6 pulses —WAN receive frame(s) not octet aligned
	7 pulses—WAN receive frame(s) aborted
	8 pulses—Detected WAN receive frame(s) with CRC
	9 pulses—Detected LAN receive frame(s) too large
	10 pulses—Detected LAN receive frame(s) not octet
	aligned
	11 pulses—Detected LAN receive frame(s) with bad
	CRC
TM	(Active Yellow) Solid Yellow indicates an Active Test
	Mode.

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