Aastra 55I IP, User Manual

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178 Model 55i IP Phone User Guide
Troubleshooting Solutions
Troubleshooting Solutions
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 55i 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" on page 26 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 55i 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 55i 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 Headset ” in the Aastra 55i
Installation Guide for information.