
GS-hosted Handset User Guide
Appendix II: Troubleshooting
Start
End
Make sure the
phone is plugged in
correctly to a POE
switch or is using an
optional power
supply
Check network
connections to
make sure the
phone can connect
to the internet
Perform a factory
default of the phone
and wait for the
configuration to
download and
reboot again. If
manually
configured, check
your configuration
Contact technical
support to check the
configuration
Check handset
cord is correctly
connected
Check router
firewall settings
and make sure
“SIP-ALG” is
turned off.
Contact technical
support for
assistance
Poor quality speech
is invariably due to
poor network or
internet connections
Contact your IT
support to diagnose
and discuss options
Yes
No
Is the
phone display
on?
Yes
Is the
call quality
acceptable?
No
Can
you hear each
other?
Yes
No
No
Can
you make
a call?
Yes
Is the
time
correct?
Yes
No
Can
you hear when
on hands
free?
Yes
No
Can you receive
a call?
Yes
No
Can
you now make
a call?
Yes
No
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