DACS II/Rel 8.2.6 April 2000
2-37
DACS II/Rel 8.2.6
MML
RTRV,STATE,EQPT,NPC,LPBK
53131
2.048 Mbit⁄ s Termination
d
Loopback direction specifier
The optional "d" will only be output for PA NPCs. For PDS
output, a "blank" space in the "d" position will be used for PB/PC
NPCs to line-up the output if at least one PA type NPC is within
the specified range. Otherwise, no "blank" space at the "d"
position will be used for PB/PC NPCs. No "blank" space is used
in the MML output format.
d Explanation
F
Facility loopback, the F type loops the incoming 2
Mbit/s bipolar signal back to the facility.
E
Equipment loopback, the E type loops the outgoing
2 Mbit/s signal back to DACS II equipment. This
type is not applicable to PB or PC type NPCs.
N
Not in a loopback state
-
NPC not equipped
0
NPC not specified in the input command, valid for
range commands only
t
Signal transmission and PM processing specifier for loopback
Values of "t" are presented in NPC order, grouped within
messages by Facility Terminating Module
t Explanation
A
Loopback with AIS downstream/upstream and
facilityPerformance Monitoring (PM) turned off.
B
Loopback with AIS downstream/upstream and PM
turned on.
C
Loopback with pass-through and PM turned off.
T
Loopback with pass-through and PM turned on.
N
Not in a loopback state
-
NPC not equipped
0
NPC not specified in the input command, valid for
range commands only
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