Troubleshooting Solutions - Aastra 6753i User Manual

Troubleshooting Solutions

Why is my display blank?
Ensure that power is being provided to your phone. Make sure your phone is plugged into a power source.
Why is my speakerphone not working?
If you press the key 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, "Set Audio" on page 25 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 6753i 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 key when the phone is on-hook and idle. For more information, refer to the "Adjusting Volume section" in the
Aastra 6753i 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 6753i Installation Guide for information.
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 page 18.
Why does my phone display the "No Service" message?
The phone displays the "No Service" message if the SIP settings have not been set up correctly.
Contact your System Administrator for more information.
How do I change my user password?
You can change the user password from the IP phone UI or the Aastra Web UI. See "User Password" on page 36 for more
information.
Why does my phone display "Bad Encrypted Config"?
The IP phone displays "Bad Encrypted Config" because encrypted configuration files are enabled but the decryption proc-
ess has failed. Report this error to your System Administrator.
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