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480i SIP IP Phone User Guide
Aastra - 2711-001 35
Chapter 6
Troubleshooting
Problem Possible Solution(s)
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 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
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
.
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 a
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 Chapter 2.
What are services, and Services on the IP phone include: