ADTRAN MX2800 - Figure 3-9. Loopback Detection Menu; T1;E1 Circuit Protection

Chapter 3. Configuration
3-10 MX2800 User Manual 61200290L1-1
Figure 3-9. Loopback Detection Menu
T1/E1 Circuit Protection
Choose which T1/E1 lines to protect (see Figure 3-10). If a T1/E1 is
set to
D
ISABLED
, then the failure of that one line will not cause the
controller cards to switch. If set to
E
NABLED
, then the line’s failure
could cause the cards to switch (depending on the
P
ROTECTION
T
HRESHOLD
setting in this menu).
The
P
ROTECTION
T
HRESHOLD
setting determines how many of the
E
NABLED
lines must fail before a card switch occurs. If you want the
failure of a single protected (enabled) line to cause a card switch, set
the
P
ROTECTION
T
HRESHOLD
to
1
. Choices include
1
through
28
.
Select
S
ET
M
ULTIPLE
to set any or all of the T1/E1s to the same
value at the same time. See Set Multiple on page 3-7 for a
description of the
S
ET
M
ULTIPLE
selection, entering
E
NABLED
or
D
ISABLED
.