Huawei Technologies Co. Ltd BTS3812A-1900 Manuel D’Utilisation

NodeB LMT User Guide 

Chapter 9  Monitoring NodeB Performance and State in 

Real Time

 

Huawei Technologies Proprietary 

9-20 

The test result is invalid when there is signal loss or out-of-synchronization frame. In 
this case, all the indices should be 0. 

The indices in the E1/T1 performance routine test results include 

z

 

Line Conflicting Error Rate: measures conflicts in line code type. 

z

 

Framing Error Rate: measures errors in frame synchronization signals. 

z

 

CRC Error Rate: measures errors in CRC4 multi-frame receiving. 

z

 

Ebit Error Rate: measures errors in CRC4 multi-frame transmitting at the peer 
end. 

The above indices reflect the transmission status of the E1/T1 link, which is related to 
the code and frame structure of the link.  

z

 

If an error occurs, check that the code types and frame structures at both ends of 
the link are the same.  

z

 

If they are the same but the error still exists, check the clock status. This is 
because of vibrations of the clock.  

The STM-1 performance routine test shows the STM-1 link status.  

This routine test has no negative impact on the services and can be done by the MML 
command only.  

The STM-1 link has no physical damage but has error bit in transmission.  

Follow the steps below to perform the STM-1 performance routine test:  

1) 

Execute the MML command of STR STM1RTTST.  
An STM-1 performance routine test is started. 

2)  Note down the ID for the task under test. 

 

z

 

When the STM-1 performance routine test is started, the NodeB assigns an ID to 
each task and sends it to you. With this ID, you can query the task under test.  

z

 

If you lose the ID, execute the MML command of LST RTTST to get it.