ADTRAN 1200287L1 Manual de usuario Pagina 105

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Chapter 6. Loopbacks
61185001L1-1 MX2810 M13 User Manual 6-9
Figure 6-11. Network Loopback Test
Remote Loopback
A R
EMOTE
L
OOPBACK
performs a loopback on the far-end M13
multiplexer. The form of this loopback code sent to the far-end will
depend on the framing mode being used. When in C-Bit parity
mode, the MX2810 will send loopback commands over the FEAC
channel. When operating in M13 framing mode, the MX2810 will
send C-Bit loopbacks at the DS2 level.
Remote all T1/E1
A R
EMOTE
A
LL
T1/E1 loopback performs a loopback of all T1/E1
channels on the far-end M13 multiplexer. If an MX2810 is located at
the far end, an A
NALOG
L
OOPBACK
is executed on all active
channels simultaneously. This loopback is only available when the
DS3 is configured for C-bit parity framing since it requires the
availability of the FEAC channel (see ANSI T1.107).
DS2 LOOPBACKS
After you select the number that corresponds with the DS2 you
want to test, the menu in Figure 6-12 appears. The section following
the figure provides a description and an illustration of the DS2
N
ETWORK
loopback testing option. Select the appropriate DS2
1-D
ATA
M
ODE
to end a test in progress.
DSX-3
LIU
M23
MUX/DMUX
M12/G.747
MUX/DMUX
(1 of 7)
F
R
A
M
E
R
D
S
2
F
R
A
M
E
R
D
S
3
....
....
T1/E1 LIU
(1 of 28)
CODEC
(28 of 28)
CODEC
(1 of 28)
T1/E1 LIU
(28 of 28)
DSX-3
LIU
M23
MUX/DMUX
M12/G.747
MUX/DMUX
(1 of 7)
F
R
A
M
E
R
D
S
2
F
R
A
M
E
R
D
S
3
....
T1/E1 LIU
(1 of 28)
CODEC
(28 of 28)
CODEC
(1 of 28)
T1/E1 LIU
(28 of 28)
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