D-Link DMI-128ESU User Manual

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D-LINK ISDN TA DMI-128ESU+ 
48 
 
9.8 Self Diagnostics 
Power On Self-Diagnostic  
 
The TA is installed with power-on self-diagnostic functions. After the power is switched 
on, the TA will perform the following self-test diagnostics. 
 
Item Description 
ROM 
Inspect ROM‘s to CHECK ROM size 
RAM 
Inspect RAM‘s read/write operations 
 
♦  Do not turn off power during self-diagnostic. 
♦  If a problem occurs during self-diagnostic, the POWER LED will 
continue flashing after the test.  
 
Before you test the ISDN TA, there are some things need to be noted as shown below:
 
 
 
1. Select the correct transfer 
protocol you are going to dial, 
make sure that these models have 
been set already. (See Chapter 5.6 
for reference)
  
 
 
2. Make sure the right User 
name, Password and Dial-Up 
number (i.e. Telephone 
number provided by ISP) are 
used and click the connect 
button.
 
 
 
 
 
3.  
The Dialog Box      
shows dialing the  
connection.