J
Jason DavisAug 21, 2025
How to fix the blank screen on my Cisco IP Phone?
- JjenkinsbarryAug 21, 2025
If the phone screen appears blank on your Cisco IP Phone, wake the touchscreen by pressing it, by lifting the handset, or by pressing any button.
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If the phone screen appears blank on your Cisco IP Phone, wake the touchscreen by pressing it, by lifting the handset, or by pressing any button.
How to fix a blank screen on my Cisco 7970 IP Phone?
To wake up a blank Cisco IP Phone screen, try pressing the touchscreen, lifting the handset, or pressing any button.
Why the softkey that I want to use does not appear on my Cisco 7970?
If the softkey that you want to use does not appear on your Cisco IP Phone, you may need to press the 'more' button to reveal additional softkeys. Alternatively, you might need to change the line state by going off-hook or having a connected call. It's also possible that your phone is not configured to support the feature associated with that softkey.
Why Barge fails and results in a fast busy tone on my Cisco IP Phone?
Barge on your Cisco IP Phone might fail, resulting in a fast busy tone because you cannot barge an encrypted call if the phone you are using is not configured for encryption. When your barge attempt fails for this reason, your phone plays a fast busy tone.
What to do if I cannot hear a dial tone or complete a call on my Cisco 7970?
If you cannot hear a dial tone or complete a call on your Cisco IP Phone, you may need to log into the Extension Mobility service. It is also possible that you must enter a client matter code (CMC) or forced authorization code (FAC) after dialing a number, but this applies to SCCP phones only. Another possibility is that your phone has time-of-day restrictions that prevent you from using some features during certain hours of the day.
Why does CallBack fail on my Cisco IP Phone?
CallBack might fail on your Cisco IP Phone if the other party has call forwarding enabled.
Why can't I hear a dial tone on my Cisco IP Phone?
There are several reasons why you might not be able to hear a dial tone or complete a call on your Cisco IP Phone. You might need to log into the Extension Mobility service, or you may have to enter a client matter code or forced authorization code after dialing. Additionally, your phone could have time-of-day restrictions that prevent certain features from working during specific hours.
What to do if the softkey I want doesn't appear on my Cisco 7970?
If a softkey is missing on your Cisco IP Phone, try these steps: First, press the 'more' button to see if additional softkeys are available. Second, change the line state by going off-hook or managing a connected call. Lastly, the phone might not be configured to support the feature associated with the softkey.
How to fix a blank screen on a Cisco IP Phone?
If your Cisco IP Phone screen is blank, wake the touchscreen by pressing it, lifting the handset, or pressing any button.
What to do if Join fails on Cisco 7970 IP Phone?
If the Join function fails on your Cisco IP Phone, ensure that you have selected at least one call in addition to the active call, which is automatically selected. Also, confirm that all selected calls are on the same line. If needed, transfer calls to one line before joining them.
General| Protocols | SIP, SCCP |
|---|---|
| Ethernet | 10/100 Mbps |
| Power | IEEE 802.3af PoE or AC adapter |
| Headset Port | Dedicated headset port |
| Speakerphone | Full-duplex |
| Audio Codecs | G.711, G.729a, iLBC |
