PairGain 150-1140-42, Manual

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150-319-142-01 December 22, 1997 Revision 01
HLU-319 List 4B PairGain Engineering - Plant Series 37
TIME-OUT OVERRIDE Loopback
Time-out Override 1101(D)0101(5)1101(D)0110(6)
FAR END NI ACTIVATE Unblock AIS and
pass 2-in-5 1100(C)0101(5)0101(5)0100(4)
IOR POWER DOWN
(HLU) Removes HDSL
line power 0110(6)0111(7)0110(6)0111(7)
* The left most bit arrives first in all sequences. The detection algorithm functions
reliably with a random 10
-3
Bit Error Ratio (BER) on the facility. The IOR POWER
DOWN code must remain present for the duration of the power down mode.
When this code is removed, the HiGain system returns to its normal unlooped
and unarmed state. Note that the entire arming and loopback sequence can be
initiated at the remote HRU location.
** This is the HEX number for the 4-bit group.
†The HRU identifies CREM with 231 bit errors, including the frame bits. When
framed data is being sent in the AUTO framing mode, the number of the 231 bit
errors detected by the test set varies from 229 to 231, depending on whether or
not the test set counts frame errors as bit errors, and on the number of frame bits
contained in the block of 231 error bits.
‡The HRU generates this bit pattern in a series of discontinuous bursts containing
20 bit errors each, including frame bits. Those test sets that do not count frame
error bits as data bit errors will indicate fewer bits than the HRU transmits for this
CI loopback.
Table 4. Addressable 1, 2, 5 (A1LB, A2LB, A5LB) Repeater Loopback
Commands* (Continued)
Name Description Code