3com 3102 User Manual

A

PPENDIX

 A: T

ELEPHONE

 I

NSTALLATION

 

AND

 M

AINTENANCE

Always unplug your telephone from the power source and from the 
network before you clean it. Use a soft cloth dampened with mild 
detergent. 

 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 16   Possible Problems

My telephone has no dial 
tone and 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 the Ethernet cables are 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.

My telephone has “locked 
up.”

■

Your telephone has lost the connection to the 
system. Remove the Ethernet cord from the jack, 
and then re-insert it into the jack.

■

Wait a few seconds. If the telephone display panel 
still appears to be locked, disconnect the electrical 
power for your telephone, and then plug it back in.

Callers cannot leave 
messages on my voice mail.

■

Your mailbox may be full. Log in to your voice 
mailbox and delete some messages.

■

Your telephone may be set up for Greeting Only 
Mailbox. Log in to NBX NetSet > NBX 
Messaging and clear the Greeting Only Mailbox 
checkbox.

When I park a call, the 
display panel shows “Park 
xtn in use,” and the call 
returns to my telephone.

You have selected a Call Park extension that is already 
in use. Try another Call Park extension. Your 
administrator can add additional Call Park Extensions. 
For details, see 

 in