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Front Panel LTPH-UM-1109-01, Issue 1
6 January 9, 2002 H2TU-C-231 List 2
NREM Network Remote Loopback DSX-1 signal is looped back to the network at the H2TU-R.
RULB Remote Unit Loopback Dual loopback at the H2TU-R.
SMJK Remote SmartJack Loopback DSX-1 signal is looped back to the network at the H2TU-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 measured in dB.
ACQ Acquisition The multiplexers of the H2TU-C and H2TU-R are trying to establish
synchronization over the HDSL2 loop.
ARM HiGain System Armed Armed to respond to Intelligent Repeater Loop (ILR) codes.
BAD RT? No Response from H2TU-R The H2TU-C does not receive any response from the H2TU-R and all
HDSL2 loop conditions are normal. Therefore, the integrity of the H2TU-R
or the HDSL2 loop is questionable.
FERR Framing Bit Error Occurred Framing bit error occurred at H2TU-C DSX-1 input.
FLDL Flash Download Flash download of firmware upgrades. Contact Customer Service for
upgrades procedures (see “Appendix D - Product Support” on page 61).
HES HDSL2 CRC Error H2TU-C HDSL2 Loop Cyclical Redundancy Check (CRC) error.
LBPV Local Bipolar Violation A bipolar violation has been received at the DSX-1 input to the
H2TU-C-231.
M=xx HDSL2 Loop Margin Indicates the power of the received HDSL2 signal relative to noise (S/N
with respect to 21.5 dB). Any value of 6 dB or greater is adequate for
reliable system operation.
MNGD Managed The H2TU-C-231 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 HDSL2 span power has been turned off by setting the PWRF option to off,
or HDSL2 span power has been turned off by use of the A1LB, A2LB, or
A5LB Intelligent Office Repeater (IOR) Power Down code.
PWR FEED ON Power Feed On Indicates that the HDSL2 loop is not grounded or shorted.
SIG Signaling The transceivers of the H2TU-C and H2TU-R are trying to establish contact
with each other over the HDSL2 loop.
SYSTEM INFORMATION MESSAGES
(a)
CODE xxxx Line Code: AMI or B8ZS The line code that H2TU-C-231 is receiving at its DSX-1 interface, if the
DS1 option is set to AUTO. Otherwise, it mimics either of the other two
DS1 line code settings, Alternate Mark Inversion (AMI) or Bipolar with
8-Zero Substitution (B8ZS).
FRM xxxx Frame: SF, ESF, UNFR Defines the type of frame pattern being received from the DSX-1:
SuperFrame (SF), Extended SuperFrame (ESF), or Unframed (UNFR).
LATT xx Loop Attenuation Current loop attenuation threshold setting is measured in dB.
LIST xx List Number List number of the H2TU-C-231.
MARG xx Margin Current margin threshold setting is measured in dB.
VER x.xx Software Version Number Software version number of the H2TU-C-231.
(a) System information messages are displayed in scroll mode. To scroll through the messages, press the MODE pushbutton for
3 or more seconds.
Table 2. Front-Panel Display Messages (Continued)
Message Full Name Description