Overview
150-402-111-02
4
December 8, 1998
HRU-402 List 1A
The BER option also uses this (BPVT/CRC) TEC to generate an alarm if
enabled. The HLU combines the one second TEC counts in both directions
for the last 60 seconds. The line unit uses this one minute Total System Error
Count (TSEC) to generate an alarm if it exceeds the selected BER threshold
of (1E-6 or 1E-7) as follows:
•
BER option=1E-6. Alarm is generated if TSEC>92
•
BER option=1E-7. Alarm is generated if TSEC>9
Once initiated, the alarm clears when the TSEC drops below its associated
threshold count. For irregular intermittent errors, the alarm can come and go
in intervals as short as one second. Alarms usually require the full 60 seconds
or longer to clear depending on the frequency of the transient errors. This
BER option is present in any HiGain 98 line unit circuit.
A
PPLICATIONS
HRU-402 List 1A provides a cost-effective and easy-to-deploy method for
delivering T1 service over two metallic pairs. Conventional, in-line T1
repeaters, cable pair conditioning, pair separation, and bridged tap removal
are not required.
The HRU-402 List 1A:
•
operates with any number of T1, Plain Old Telephone Service (POTS),
or other HiGain systems sharing the same cable binder group.
•
can be used with customers requiring T1 service on a temporary or
permanent basis.
•
provides a means of quickly deploying service in advance of fiber-optic
transmission systems.
•
is easily installed allowing service to be provided within hours. Fiber
optic systems can be installed and cut-over from the installed HiGain
system. The installed HiGain system can then be easily removed and
utilized elsewhere.
