Cabletron Systems CSMIM-T1 manual Drop/Insert Interface is out of frame sync or not receiving

Chapter 4: CSMIM-T1 Parameters

Table 4-3 stats-T Command Information

Field	Description
Online	When illuminated, the T-1 engine is engaged with the
	network. Otherwise, the T-1 Network Interface and
	Drop/Insert Interface are isolated from the T-1 engine.
Up Time	Amount of time the T-1 engine has been up, in hours,
	minutes, and seconds. The “hours” field is a 16-bit register
	that can count up to 2700 days (less than 7 years).
Serial Number	The T-1 engine’s serial number.
Circuit ID	The T-1 engine’s Circuit ID displayed from the tni_circuit_id
	parameter.
Unit ID	The T-1 engine’s Unit ID displayed as:
	“XYLOGICS T1-ENGINE 085nnn Rev. n mm/dd/yy xxxx”
	Where:
	085nnn - This is the firmware number.
	Rev. n - This is the firmware revision number.
	mm/dd/yy - This is the firmware release date.
	xxxx - This is the EPROM check sum.
DII Sync	When DII Sync is true, the Drop/Insert Interface is receiving
	ones pulses and is in frame sync. When DII Sync is false, the
	Drop/Insert Interface is out of frame sync or not receiving
	pulses and is sending AIS (all ones framed).
Interval	The 15-minute interval being displayed. This is an integer
	from 1 to 96, “current” or “total”.
Number of Valid	Part of the “current” report that indicates the number of
Seconds	seconds for which the statistics data has been collected.
Number of	Part of the “total” report that indicates the number of valid
15-minute	15-minute periods. This could also be derived from the
Periods	uptime.
Bursty Errored	A Bursty Errored Second (BES) is a second with more than
Seconds	one, but less than 320 CRC error events.
Controlled Slip	A Controlled Slip Second (CSS) is a second with one or more
Seconds	Controlled Slips.

4-4 CSMIM-T1 Hardware Installation Guide