/ IP Phone User Guide 55
Troubleshooting Solutions
Troubleshooting Solutions
This section describes solutions to
some most commonly occurring
problems.

Why is my display blank?

Ensure that power is being
provided to your phone. If your
network does not provide inline
power over Ethernet, you can
obtain an additional accessory, the
Aastra PoE (Power over Ethernet)
inline power supply, to provide
power over Ethernet locally to your
phone. See the section
“Connecting to the Network and to
Power” in
the Aastra 480i Installation Guide
for details.

Why is my speakerphone

not working?

If you press the d /f button
and the speaker light flashes and
you do not hear dial tone through
the speaker phone, the Set Audio
option in the phone’s Options list
has been set up for headset use.
Press d /f a second time and if
the light goes out, the phone has
been set up to be used only with a
headset or handset. If the light
stays on steady and you hear dial
tone, the phone has been set up so
that you can alternate between the
speakerphone and the headset by
pressing d /f . See the section
“Customizing your phone” in
the 480i Installation Guide for
instructions on how to change
the Set Audio option.

Why can’t I get a dial tone?

Check for any loose connections
and that the phone has been
installed properly. For installation
instructions, please refer to the
“Installation and Setup” section in
the Aastra 480i Installation Guide
provided with your phone.

Why doesn’t my phone ring?

Check the ring volume on your
phone. It may be turned down or
turned off. To adjust the ringer
volume setting, press the volume
button when the phone is on-hook
and idle. For more information,
refer to the “Adjusting Volume
section” in the Aastra 480i
Installation Guide provided with
your phone.

Why is the light not coming on

with a new Voice Mail Message?

Your phone system or service
provider must provide “Visual”
Message Waiting service for this
function to work. Check with
your system administrator for
more information.

Why is my handset not working?

Check to ensure that the handset
cord is fully connected to both the
phone and handset. See the section
“Connecting a Handset or Head-
set” in the Aastra 480i Installation
Guide for information.

What are services, and how

do I use them?

Services on the IP phone include:
• Customized features
• Callers List
•Directory List
•Voicemail
See the section, "Services" on
page26 more information about
the options available under
"Services".

How do I find the IP address of

my phone?

Instructions on where to find the IP
address of your phone can be
found in this guide in the section,
"Finding Your Phone’s IP
Address" on page3.