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NE synchronisation test
....................................................................................................................................................................................................................................
Overview
Procedure
....................................................................................................................................................................................................................................
7 - 6
This test ensures protected synchronisation of the NE to external clock
sources.
Important! The test must only be carried out for NEs with connected
external clock sources.
Proceed as follows to complete the NE synchronisation test:
............................................................................................................................................................
If not already done connect an external clock source to both external
1
timing input ports located on the rear side of the subrack.
Use a 2.048 MHz or 2.048 Mbit/s framed signal for SDH, and a 1.544
Mbit/s framed signal for SONET.
............................................................................................................................................................
Login to the NE as described in Chapter 6, section
2
procedure"
(6-12).
............................................................................................................................................................
Select
3
Configuration
Result:
The window
............................................................................................................................................................
Assign the first clock source.
4
Select the tab
External Input 1
•
Select the
Input Signal Format
•
Set the
SSM Support
- framed
(SDH mode) or
input signals. In all other cases select
Select the tab
External Reference 1
•
Select
PRC
drop-down list box.
Level
•
Select the priority
Reference Prioriy
Lucent Technologies
→
Timing/Sync
Synchronisation Characteristics
and set the following parameters:
depending on the input signal.
field to
Supported
ESF
(SONET mode) external timing
and set the following parameters:
(SDH) or
PRS
(SONET) in the
in the drop-down list box
1
.
Stand alone test procedures
"NE login
in the System view.
appears.
in the case of
Not Supported
.
Provisioned Quality
System Timing
Issue a, April 2002
2 Mbit/s
365-374-074
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