To Next PageTo Next PageWhat to do if my Aastra Clearspan 6757i displays 'Network Disconnected'?
If your Aastra IP Phone displays a 'Network Disconnected' message, first ensure that the cables are firmly connected to both the phone and the wall jack. If the problem persists, it may be due to changes in your phone’s network settings, in which case you may need to restart your phone. Contact your system or network administrator for assistance.
Why is my Aastra IP Phone display blank?
If the display on your Aastra IP Phone is blank, ensure that the phone is receiving power. If your network does not provide inline power over Ethernet, you may need to obtain an Aastra PoE (Power over Ethernet) inline power supply.
Why doesn't my Aastra Clearspan 6757i IP Phone ring?
If your Aastra IP Phone isn't ringing, the ringer volume might be too low or turned off. To adjust the ringer volume, press the volume key when the phone is on-hook and idle.
Why can’t I get dial tone on my Aastra Clearspan 6757i?
If you can't get a dial tone on your Aastra IP Phone, check for any loose connections and ensure that the phone has been installed properly.
Why is my speaker not working on Aastra Clearspan 6757i?
If the speaker on your Aastra IP Phone is not working, it's possible that the Set Audio option in the phone’s Options list has been configured for headset use. Press the Speaker key again and check the lamp status.
Why is my handset not working on Aastra Clearspan 6757i?
Check to ensure that the handset cord is fully connected to both the phone and handset.
What to do if my Aastra Clearspan 6757i displays the “No Service” message?
If your Aastra IP Phone displays the “No Service” message, the SIP settings might not be set up correctly. For more information about registering your phone, see your system administrator.
Why is the lamp not coming on when I have a new Voicemail Message on my Aastra Clearspan 6757i?
If the lamp isn't lighting up for new voicemail messages on your Aastra IP Phone, it means your phone system or service provider must provide a Visual Message Waiting service. Contact your system administrator.
General| Line Keys | 9 |
|---|---|
| Speakerphone | Full-duplex |
| Protocols | SIP |
| Power over Ethernet (PoE) | 802.3af Class 2 |
| Audio Codecs | G.711, G.729, G.722 |
| Expansion Module Support | Yes, up to 3 modules |
Provides guidance on initial phone setup and connection.
Describes the phone's boot-up process and initial screens.
Identifies and explains the phone's physical keys and their operations.
Outlines the phone's configurable options accessible via the User Interface.
Details how to set up call forwarding for different scenarios like Always, Busy, No Answer.
Explains how to adjust ring tones, tone sets, and display settings.
Guides on setting the phone's time and date manually or via server.
Describes various methods for initiating phone calls.
Explains how to answer incoming calls using different methods.
Provides instructions on how to terminate an active phone call.
Explains how to place and retrieve calls on hold.
Describes how to activate and deactivate the DND feature.
Details procedures for both unannounced and announced call transfers.
Covers programming and using speed dial entries for quick dialing.
Explains how to view, manage, and delete incoming call records.
Covers accessing and managing the list of recently dialed numbers.
Details the features and layout of the M670i module.
Details the features and layout of the M675i module.
Lists default codes for various Clearspan phone features.
Solutions for issues related to network connectivity problems.
Steps to resolve issues with a blank phone screen.
Troubleshooting steps for problems with the speaker function.
Solutions for issues preventing dial tone.
