D-Link DMI-128ESU User Manual

D-LINK ISDN TA DMI-128ESU+ 

46 

 

Is there dial tone when 
headset is removed from 
the hook? 

Go through checks 
outlined in section 2 and 3 
of this trouble-shooting 
manual. Contact the phone 
manufacturer if the phone 
still fails to work. 

Is the incoming calls 
being rejected? 

1. Please confirm the 

telephone is functioning 
properly on the other 
end.  

2. Confirm Data bits; stop 

bits, Parity and Flow 
control type settings. 

3. Reset service functions 

to the same settings on 
both calling side and 
called side.  

4. Terminate “Call Screen” 

function. 

Is this analog port 
connected to more than 
one telephone and/or fax? 

Only one telephone set or 
one fax machine can be 
connected to one analog 
port. Please disconnect all 
additional devices. 

No 

Yes 

Yes 

No 

Yes