Troubleshooting Call Issues

Symptom	Problem	Corrective Action

There is no dial tone.	Power is not correctly applied to	• Check that the display is illuminated.
	the phone.	• Make sure the LAN cable is inserted
		properly at the rear of the phone (try
		unplugging and re-inserting the
		cable).
		• If using Power over Ethernet (PoE),
		have your system administrator check
		that the switch is supplying power to
		the phone.

	Dial tone is not present on one of	• Switch between Handset, Headset (if
	the audio paths.	present) or Speakerphone modes to
		see if the dial tone is present on other
		paths.
		• If the dial tone exists on another path,
		connect a different handset or
		headset to isolate the problem.

The phone does not ring.	Ring volume is low.	While the phone is idle, adjust the ringing
		level by pressing	or	.

	Outbound or inbound calling is	• Place a call to the phone under
	unsuccessful.	investigation. Check that the display
		indicates incoming call information.
		• Lift the handset. Ensure the dial tone
		is present and place a call to another
		extension or number. Check that the
		display changes in response.

	The phone has a Silent ring tone.	Choose a ring tone other than Silent. See
		Updating the Ring Tone on page 2-22.

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Polycom 1725-16824-001 manual Troubleshooting Call Issues