Adtran MX2800 M13 User Manual

Page of 200
MX2800 M13 Multiplexer User Manual
Configuration, Section 3
61200290L1-1G
    3-13
 
Figure 3-9.  Loopback Detection Menu
The following options are available for detection:
• Disabled is used to cause the T1/E1 lines to ignore in-band loop-up and loop-down codes.
• CSU is used to cause the channel to loop up or loop down when it receives a CSU loop-up or loop-down 
pattern for more than 5 seconds.
• NIU is used to cause the channel to loop up or loop down when it receives an NIU loop-up or loop-down 
pattern for more than 5 seconds.
Select Set Multiple
 
to set a contiguous group or all of the T1/E1s to the same value at the same time. Refer 
on page 3-9 for a description of the
 
Set Multiple option.
T1/E1 Circuit Protection
T1/E1 Circuit Protection determines which circuit is allowed to initiate a protection switch if a failure in 
the circuitry for that channel is detected. See 
on page 3-14. If a T1/E1 is set to 
Disabled
, the 
failure of the circuitry of that one channel does not cause a protection switch. If set to 
Enabled
, the failure 
of a channel causes a protection switch to occur if the Protection Threshold setting in this menu is 
exceeded.