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No Dial-Tone
Troubleshooting
Verify power is correctly applied to the
SoundPoint
®
IP 501 SIP phone:
• Check that the display is illumi-
nated.
• Make sure the LAN cable is insert-
ed properly at the rear of the phone
(try unplugging and re-inserting the
cable).
• If using inline powering, check
that the switch is supplying power
to the phone (contact your System
Administrator).
Verify if dial tone is present on any other
audio paths:
• Switch between handset, headset
(if present) or hands-free to see if
dial tone is present on these other
paths.
• If dial tone exists on one of these,
connect a different handset or head-
set to isolate the problem.
No Display, Incorrect Display or Bad Contrast
Verify power is correctly applied to the
SoundPoint
®
IP 501 SIP phone:
• As “No Dial-Tone” above.
Verify contrast adjustment:
• Follow the instructions in this User
Guide to readjust the contrast to a
darker level.
• Reboot the phone to obtain a
default level of contrast (follow the
instructions in this User Guide).
Verify successful outbound or inbound
calling:
• Place a call to the phone under in-
vestigation. Check that the display
indicates incoming call informa-
tion.
• Lift the handset. Ensure dial tone
is present and place a call to anoth-
er extension or number. Check that
the display changes in response.
No Ringing
Verify incoming ring setting and volume
level:
• Adjust the ringing level from the
front panel using the volume up/
down keys.
• Check same status of handset,
headset (if connected) and through
the hands-free speakerphone.
Verify successful outbound or inbound
calling:
• As “No Display” above.
• Check same status of handset,
headset (if connected) and through
the hands-free speakerphone.
No Audio on Headset
Verify correct connections:
• Ensure the headset is plugged into
the jack marked Headset at the rear
of the phone.
• Ensure the headset amplifier (if
present) is turned on and/or the
volume is correctly adjusted.
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