Motorola T1/E1 用户手册

Canopy  T1/E1 Multiplexer 

 

 

 

 

 

 

September 2004 

 

 

 

 

 

 

     

      T1/E1 Multiplexer FPGA Version 3.4 

 
 

 

Page 59 of 73 

A unit-based comparison of diagnostic measurements is provided in 

Bit errors 

Logic errors in 
the bit stream 

Only out of 
service 

Best unit for 
point-to-point 
performance 

Requires that all traffic 
be test traffic (known 
data pattern) 

BPVs 

Pulses of the  
same consecutive
polarity 

In service 
or out of 
service 

Good for circuit
or repeater 
problems 

Meaningful for only 
metallic media, because 
some equipment corrects
BPVs 

Frame errors 

Incorrect values 
in the framing 
bit position 

In service 
or out of 
service 

Approximates 
bit error rate on
in-service basis

Evaluates only overhead
bits 

CRC errors 

Bit errors in a 
block of data 

In service 
or out of 
service 

98.4% bit error
rate accuracy 

Available with only ESF 
framing 

 

Firmware upgrades are periodically made available to enhance performance or to add 
features and functionality to the Canopy T1/E1 Multiplexer. 

To install new firmware on a Canopy T1/E1 Multiplexer, perform the following steps. 

1.  Close any other applications that are active on the PC. 

2.  From the main menu of the EMS, select Config

→Software Upgrade (shown in 

 on Page 

RESULT: The System Upgrade window opens, as shown in 

 

 

 

Issue 3