ADTRAN 1200287L1 Manual de usuario Pagina 42

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Chapter 3. Configuration
3-4 MX2810 M13 User Manual 61185001L1-1
Remote Loopbacks
Select FEAC/C-BIT to allow the MX2810 to respond to remote
loopback requests received over either the DS3 Far End Alarm and
Control (FEAC) channel and/or DS2-level C bits. This mode is
valid in both C-BIT or M13 framing formats. Select FEAC to allow
the MX2810 to respond only to remote loopback requests received
over the DS3 FEAC channel. This mode is only valid when using
C-BIT framing. In this mode, DS2 C bit loopbacks will be ignored.
Select C-BIT to allow the MX2810 to respond only to remote
loopback requests received over DS2 C bits. This mode is available
when operating in either C-BIT or M13 framing. In this mode,
FEAC loopbacks received when operating in C-BIT framing will be
ignored. Select D
ISABLED
to ignore all out-of-band loopback
requests (FEAC and DS2 C-BIT). When D
ISABLED
is selected, the
MX2810 will still respond to individual T1 inband CSU/NIU
loopbacks if so configured in the T1/E1 Loopback Detection menu.
XCV Threshold
The XCV (excessive code violations) T
HRESHOLD
sets a limit on CVs
accepted by the unit before it switches controller cards. If set to
D
ISABLED
, code violations will not cause the unit to switch
controller cards. The threshold limits are described in the following
chart:
Setting The unit switches controller cards if...
1E
-3
more than one out of every 1,000 bits received on the
DS3 contains a code violation.
1E
-4
more than one out of every 10,000 bits received on
the DS3 contains a code violation.
1E
-5
more than one out of every 100,000 bits received on
the DS3 contains a code violation.
1E
-6
more than one out of every 1,000,000 bits received on
the DS3 contains a code violation.
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