Revision
01
March 17, 1998
350-611-101-01
14
PairGain
Engineering - Plant Series
HLU-611
List
1
Loopbacks
The HLU-611 List 1 loopback messages are listed in the following table.
Loopback Messages
Message
Full Name
Description
SMJK
Smart-Jack Loopback
Loopback at HRU toward the CBA initiated by either
the (2 in 5) in-band loopback code or the out-of-
band ESF data link code.
NREM
Network Remote
Loopback
Loopback at HRU toward the CBA initiated by
upstream in-band codes or from the maintenance
terminal.
NLOC
Network Local
Loopback
Loopback at HLU toward the CBA initiated by
upstream in-band codes or from the maintenance
terminal.
CLOC
Customer Local
Loopback
Loopback at HRU toward CI initiated from CPE
(customer) by in-band codes or from the
maintenance terminal.
CREM
Customer Remote
Loopback
Loopback at HLU toward customer initiated from
CPE (customer) by in-band codes or from the
maintenance terminal.
ARM
Armed
The HiGain system detected the IR loopback
(2 in 5) arming code.
TLOS
Transmit Loss of
Signal (Loopback)
HRU is in a logic loopback state caused by a loss of
its T1 input from the CI, if enabled at the HRU via its
TLOS switch option.
