ADC HDSL4 user manual Loopback Messages, Diagnostic Messages, System Information Messages a

Front PanelLTPH-UM-1031-03, Issue 3

Table 2. Front-Panel Display Messages (Continued)

Message	Full Name	Description
LOOPBACK MESSAGES
CDU1	Customer Doubler 1 Loopback	DS1 signal from customer is looped back to the customer at H4D1
		(111100).
CDU2	Customer Doubler 2 Loopback	DS1 signal from customer is looped back to the customer at H4D2
		(111110).
CLOC	Customer Local Loopback	DS1 signal from customer is looped back to the customer at the H4TU-R.
COLB	Central Office Loopback	Dual loopback at the H4TU-C.
CREM	Customer Remote Loopback	DS1 signal from customer is looped back to the customer at the
		H4TU-C.
NDU1	Network Doubler 1 Loopback	Signal is looped back to the network at H4D1 (110000).
NDU2	Network Doubler 2 Loopback	Signal is looped back to the network at H4D2 (111000).
NLOC	Network Local Loopback	DSX-1 signal is looped back to the network at the H4TU-C.
NREM	Network Remote Loopback	DSX-1 signal is looped back to the network at the H4TU-R.
RULB	Remote Unit Loopback	Dual loopback at the H4TU-R.
SMJK	Remote SmartJack Loopback	DSX-1 signal is looped back to the network at the H4TU-R SmartJack
		module.
DIAGNOSTIC MESSAGES
A=xx	Maximum Loop Attenuation	The Attenuation (A) message appears followed by xx, where xx is the
		highest loop attenuation of all HDSL interfaces.
ACQ1 or ACQ2	Acquisition 1 or Acquisition 2	The multiplexers of the H4TU-C and H4TU-R are trying to establish
		synchronization over HDSL4 Loop 1 or Loop 2.
ARM	System Armed	Armed to respond to Intelligent Repeater Loop (ILR) codes.
BAD RT?	No Response from H4TU-R	The H4TU-C receives no response from the H4TU-R, and all HDSL4
		loop conditions are normal; therefore, the integrity of the H4TU-R or
		the HDSL4 loops is questionable.
FERR	Framing Bit Error Occurred	Framing bit error occurred at H4TU-C DSX-1 input.
HxES	HDSL4 CRC Error Loop 1 or Loop 2	H4TU-C HDSL4 Loop 1 or Loop 2 Cyclical Redundancy Check (CRC)
		error. (Loop 1 has display priority over Loop 2.)
LBPV	Local Bipolar Violation	A bipolar violation has been received at the DSX-1 input to the
		H4TU-C-319.
1=xx or 2=xx	HDSL4 Loop Margin	Indicates the power of the received HDSL4 signal on each loop relative
		to noise (S/N with respect to 21.5 dB). Any value of 6 dB or greater is
		adequate for reliable system operation. (xx denotes lowest margin in
		dB for Loop 1 and Loop 2.)
MNGD	Managed	The H4TU-C-319 is under control of the HMU-319 network
		management unit. In this state, the front-panel craft port and
		pushbuttons are disabled.
PWR FEED OFF	Power Feed Off	HDSL4 span power has been turned off by setting the PWRF option to
		OFF, or HDSL4 span power has been turned off by use of the A5LB
		Intelligent Office Repeater (IOR) powerdown code.
PWR FEED ON	Power Feed On	Indicates that the HDSL4 loop power is applied and neither pair is
		grounded.
SIG1 or SIG2	Signaling	The transceivers of the H4TU-C and H4TU-R are trying to establish
		contact with each other over HDSL4 on Loop 1 or Loop 2.
SYSTEM INFORMATION MESSAGES (a)
VER x.xx	Software Version Number	The software version number of the H4TU-C-319.
LIST xx	List Number	The list number of the H4TU-C-319.
		Continued

6 September 12, 2003 H4TU-C-319 List 1