Message
Description (normal operating messages in bold)
A=xx
The loop attenuation of the longest (maximum loss) span, measured in dB.
ACQ
The multiplexers of the H2TU-C and H2TU-R are trying to establish synchronization.
ARM
Armed to respond to Intelligent Repeater Loop (ILR) codes.
BAD RT?
The H2TU-C is not receiving a response from the H2TU-R.
FERR
A framing bit error occurred at H2TU-C DSX-1 input.
HES
H2TU-C HDSL2 loop cyclical redundancy check (CRC) error.
LBPV
A local bipolar violation has been received at the DSX-1 input to the H2TU-C.
M=xx
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
The H2TU-C is under control of the HMU-319 network management unit.
PWR FEED OFF
HDSL2 span power is turned off.
PWR FEED ON
Indicates that the HDSL2 loop is not grounded or shorted.
SIG
The transceivers of the H2TU-C and H2TU-R are trying to establish contact with each
other on Span 1 of the HDSL2 loop.
Message
Description (default selections in bold)
VER x.xx
Software version number of the H2TU-C-202.
LIST xx
List number of the H2TU-C-202.
FRM xxxx
Frame pattern received from the DSX-1 (SF, ESF, UNFR).
CODE xxxx
Line code (AMI or B8ZS).
LATT xx
Loop Attenuation threshold setting (38 dB).
MARG xx
Margin threshold setting (4 dB).
EQL
Indicates DSX-1 Equalizer setting: 0 (0 to 132 ft.), 133 (133 to 265 ft.), 266 (266 to 398 ft.),
399 (399 to 532 ft.), 533 (533 to 655 ft.).
RLBO
Indicates H2TU-R line buildout setting: 0 dB, -7.5 dB, or -15 dB.
LPBK
SmartJack loopback commands enabled (ENA) or disabled (DIS).
SPLB xxxx
System configured for generic (GNLB) or special in-band loopback commands (A1LB, A2LB, A3LB,
A4LB, A5LB).
PWRF
HDSL2 line power disabled (OFF) or -180 Vdc (ON).
HBER
1E-6 or 1E-7 = indicates HDSL2 BER alarm threshold setting. NONE = no generation of a
system alarm due to BER.
DBER
24-hour DSX-1 BER alarm threshold enabled (ENA) or disabled (DIS).
LBTO
Loopback timeout = NONE, 20, 60, 120 minutes, 8-hour, 24-hour.
ALM
Enables (ENA) or disables (DIS) alarm indications on pins 30 and 22.
DS1
DSX-1 line code = Bipolar with 8-Zero Substitution (B8ZS), Alternate Mark Inversion (AMI).
CONV
H2TU-R frame format conversion = OFF (framing determined by the DS1 FRMG option),
ACON (autodetection of framing and potential frame conversion at the H2TU-R), or
FCON (autodetection of framing and forced frame format conversion at the H2TU-R).
FRMG
DS1 frame formatting = AUTO (auto framing mode) or UNFR (unframed mode),
RDA
Alarm indications due to remote DS1 LOS at H2TU-R input are enabled(ENA) or disabled
(DIS).
ALMP
Alarm pattern = Alarm Indication Signal (AIS) or Loss of Signal (LOS).
BPVT
Bipolar Violation Transparency (BPVT) enabled (ENA) or disabled (DIS).
NLBP
H2TU-R transmits either AIS or LOS towards CI for any network loopback.
TLOS
Logic loopback at the H2TU-R is either enabled (ENA) or disabled (DIS) when an LOS occurs
at its DS1 input.
PRM
Performance Report Messaging = OFF (no enhanced Performance Report Messaging), SPRM
(Supplemental PRM), NPRM (Network PRM), AUTO (H2TU-R generates both SPRMs and
NPRMs whenever possible).
NAIS
If ALMP is set to AIS, indicates which pattern is sent to the network when a remote LOS
or AIS occurs. CI = AIS-CI sent to the network; AIS = AIS sent to the network.
ROVR
Conversion of an ESF DS1 payload from the network with an embedded RAI pattern to an
SF-RAI pattern toward the CI at the H2TU-R is enabled (ENA) or disabled (DIS). CONV
option must be set to FCON or ACON.
RACI
Conversion of a DS1 RAI signal (yellow alarm) received by the H2TU-R to an RAI-CI signal
toward the network is enabled (ENA) or disabled (DIS).
PBOC
Indicates the power output levels of the H2TU-R customer unit toward the network.
Default (DEF) or enhanced (ENH).
PBON
Indicates the power output levels of the H2TU-C network unit toward the customer.
Default (DEF) or enhanced (ENH).
(a) To scroll, press the MODE pushbutton for 3 seconds. Front-panel codes scroll in the order listed. The
configured selections follow each code.
Front-Panel Diagnostic Messages
Front-Panel Read-Only Settings Using MODE
(a)
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