ADTRAN MX2800 - DS2 Loopback Tests

Chapter 6. Diagnostics
61200290L1-1 MX2800 User Manual 6-9
Figure 6-11. Metallic Diagnostics Loopback Test
Remote Loopback
A
R
EMOTE
L
OOPBACK
performs a loopback on the far-end M13
multiplexer. If an MX2800 is located at the far end, a
L
INE
L
OOPBACK
is executed when a
R
EMOTE
L
OOPBACK
is engaged. 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).
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 MX2800 is located at
the far end, an
A
NALOG
D
IAGNOSTIC
loopback 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
1=DS2 #
X
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)