Moving your telephone, Swapping telephones, Cleaning your telephone – 3Com NBX 900-0208 User Manual
Page 121: Troubleshooting problems

Moving Your Telephone
121
Moving Your 
Telephone
All 3Com Telephones have the Automatic Telephone Relocation feature. 
Each telephone has a unique “address.” You can move your telephone to 
another location, connect it to any Ethernet jack on the LAN, and still 
maintain all of your personalized features, speed dials, and extension 
number.
Swapping 
Telephones
Because your extension number and personal settings are associated with 
your physical telephone, only your administrator can move phone 
extension settings from one telephone to another.
Cleaning Your 
Telephone
Always unplug your telephone from the power source and from the 
network before you clean it. Use a soft cloth dampened with mild 
detergent. 
WARNING: Failure to unplug the telephone before you clean it could 
result in electrical shock.
Troubleshooting 
Problems
lists possible problems that you may encounter and the most
likely solutions. Where possible, each solution refers to the section in this 
guide where you can find detailed information.
Table 12 Possible Problems
Possible Problem
Suggested Solutions
My telephone has no dial 
tone. The display panel is 
blank.
■
Verify that the power cord is fully inserted in the 
correct connector on the underside of the 
telephone. Use the strain relief tab to prevent the 
cord from becoming unplugged.
■
Verify that each Ethernet cable is connected and 
that each cable is in the proper connection.
■
Remove and add power to the telephone by 
unplugging the power cord at the electric outlet 
and plugging it back in.
■
If the telephone is powered through a powered 
Ethernet cable, make sure that power is applied to 
the cable at its source.
