Polycom IP501 Telephone User Manual


 
19
No Dial-Tone
Troubleshooting
Verify power is correctly applied to the
SoundPoint
®
IP 500/501 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 500/501 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.
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.