Model 6757i CT IP Phone User Guide 285Troubleshooting SolutionsTroubleshooting SolutionsWhy is my display blank?Ensure that power is being provided to your phone. If your network does not provide inline powerover Ethernet, you can obtain an additional accessory, the Aastra PoE (Power over Ethernet) inlinepower supply, to provide power over Ethernet locally to your phone. See the section “Connectingto the Network and to Power” in the Aastra 6757i CT 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 throughthe 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 witha headset or handset. If the light stays on steady and you hear dial tone, the phone has been set upso that you can alternate between the speakerphone and the headset by pressing . See thesection “Set Audio” on page 34 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 installationinstructions, please refer to the “Installation and Setup” section in the Aastra 6757i CTInstallation 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 ringervolume setting, press the volume button when the phone is on-hook and idle. For moreinformation, refer to the “Adjusting Volume section” in theAastra 6757i CT 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 thisfunction 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 thesection “Connecting a Handset or Headset” in the Aastra 6757i CT Installation Guide forinformation.
