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MX2800 STS-1 User Manual
T1/E1 Circuit Protection
T1/E1 Circuit Protection determines which circuit initiates a protection switch if a failure in the circuitry
for that channel is detected.
• If 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 (depending on the
Protection Threshold setting).
Hairpin Loopback
This option allows a Hairpin loopback of the VT to the STS-1 signal for dropping further down the
SONET ring.
Line ID
Text strings may be entered to name the individual T1 lines. This field accepts up to 18 alpha-numeric
characters, including spaces and special characters (such as an underbar).
Set Multiple
The Set Multiple option displays the menu shown in
to the state, line coding, length, circuit protection, and loopback detection.
These may be set as a contiguous group, or to all VTs at one time.
All VTs
Make changes to all VTs with the following steps:
1. Set
First
to 1 and
Last
2. Make the necessary changes
3. Select
(or select the Apply option that corresponds to the change made)
Apply All
4. Exit the menu if work is complete
Contiguous Group
Make changes to some of the VTs within a contiguous group by following these steps:
1. Set the
and
First
Last
2. Select
Apply All
(or select the Apply option that corresponds to the change made).
3. Exit the menu, or continue to enter new First and Last numbers for other lines. Apply the settings
following each change.
61204659L1-1A
to 28
fields to correspond to the lines to change
Figure
3-8, which is used to make multiple changes
Configuration, Section 3
VT Interface
3-11
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