What to Do If Your Office Phone Has No Dial Tone

If you pick up your desk phone and hear nothing — no dial tone, no sound at all — use these steps to diagnose and resolve the issue before contacting IT.

Step 1: Check the Physical Connections

1. Make sure the handset cord (the coiled cord connecting the handset to the phone base) is firmly plugged into both ends.
2. Check the line cord (flat cord from the phone to the wall jack) — press firmly at both ends to ensure a solid connection.
3. If the phone has a network/ethernet cable (most Intermedia VOIP phones do), confirm it's firmly seated in the back of the phone and in the wall jack or network switch.

Step 2: Restart the Phone

1. Unplug the ethernet/network cable from the back of the phone.
2. Wait 30 seconds.
3. Plug it back in and wait 1–2 minutes for the phone to fully reboot and register with the phone system.
4. Pick up the handset and check for a dial tone.

Step 3: Check the Phone Display

• If the phone screen is blank or dark: the phone may not be receiving power. If it's a PoE (Power over Ethernet) phone, the network switch may have lost power or the port may be disabled — contact IT.
• If the screen shows "No Service," "Unregistered," or "Connecting": the phone has lost its connection to the Intermedia phone system. A reboot usually resolves this, but if the message persists after 5 minutes, contact IT.
• If the screen looks normal but there's still no dial tone: try pressing the speakerphone button to test audio through the speaker rather than the handset.

Step 4: Test the Handset

If the speaker works (you hear a tone through speakerphone) but the handset is silent, the handset itself may be faulty. Try a different handset cord if one is available, or report the issue to IT for a replacement.

Contact IT

If the phone still has no dial tone after the steps above, submit a ticket so IT can investigate — the issue may be with the network port, the PoE switch, or the phone's registration on the Intermedia system:

• 📧 itsupport@redlandschristian.org
• 🎫 acarcs.zendesk.com
• Include your room number and extension in the ticket.

Related Articles

• How to Transfer a Call and Set Up a Conference Call
• How to Set Up and Reset Your Voicemail PIN
• How to Request a New Phone or Extension

Keywords: phone, no dial tone, dead phone, Intermedia, troubleshoot, office phone

RCS Information Technology · IT Help Center