Vobx 2550 User Manual (English)

Questions and Answers:

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Jennifer ParrishJul 28, 2025
How to fix a Vobx Telephone with nothing on the LCD display?
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  Paul AndersonJul 28, 2025
  If nothing is displayed on the LCD screen of your Vobx Telephone, or if the text/graphics appear malformed, first ensure the A/C adapter's power jack is securely connected to the phone and plugged into a working power outlet. Try disconnecting and reconnecting the power after 10 seconds. Also, pressing the ‘SPEAKER’ or ‘HEADSET’ button, or lifting the handset to check for a dial tone can help diagnose the issue. If you just tried to upgrade firmware and you see malformed text displayed on LCD display, contact your dealer for assistance. Ensure the phone is not in TV-OUT mode by pressing the key.
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Amy WellsAug 4, 2025
What to do if I can hear a dial tone but can't make calls on my Vobx Telephone?
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  Stephen JohnsonAug 4, 2025
  If you can hear a dial tone in the handset of your Vobx Telephone but cannot place or accept calls, the issue might be related to the network connection or VoIP server registration. If you see a specific icon displayed on the LCD, double-check the network connection. If the network is functional, reach out to your service provider to confirm service availability. Also, verify the SIP settings to ensure the phone is correctly registered to the VoIP server and that the server is reachable. Contact your VoIP service provider and / or ISP to ask for service availability.
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whitebryanAug 12, 2025
Why can't I hear a dial tone on my Vobx Telephone?
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  Jacob JonesAug 12, 2025
  If you cannot hear a dial tone on your Vobx Telephone, start by checking the cable connections between the IP phone and the handset, ensuring they are secure. If the connection seems fine, try replacing the cable with a new one to rule out a faulty cable. You can also try pressing the ‘SPEAKER’ button to see if you can hear the dial tone through the speaker. Also check the connection cable between handset and the phone. Try a higher volume setting.