AudioCodes 450HD - Troubleshooting; Common Issues and Solutions

User's Manual 8. Troubleshooting
Version 3.0.1 129 450HD IP Phone
8 Troubleshooting
Read this section if a problem with a phone occurs. Contact your administrator if necessary.
Table 8-1: Troubleshooting
Symptom Problem Corrective Procedure
Phone is off
(no touch screen
displays and
LEDs)
Phone is not
receiving power
 Make sure the AC/DC power adapter is attached firmly to the
DC input on the rear of the phone.
 Make sure the AC/DC power adapter is plugged into the
electrical outlet.
 Make sure the electrical outlet is functional.
 If using Power over Ethernet (PoE), contact your network
administrator to check that the switch is powering the phone.
'LAN Link Failure'
message
displayed in the
touch screen
No LAN connection
 Make sure the LAN cable is connected securely to the LAN port
on the rear of the phone.
 Make sure the other end of the LAN cable is connected to the
network (switch). If it's not, inform your network administrator.
Phone is not
ringing
Ring volume is set
too low
 Increase the volume (see Section 5.12.1)
Touch screen
display is poor
Touch screen
settings
 Adjust the phone’s screen brightness (see Section 5.7)
Headset has no
audio
Headset not
connected properly
 Make sure your headset is securely plugged into the headset
port located on the side of the phone.
 Make sure the headset volume level is adjusted adequately (see
Section 5.12.5).
'Calendar is not
available for PIN
code login'
message
Cannot access
Microsoft Exchange
Calendar
 Log in again but do not log in using PIN code
 Log in using Username and Password (see Section 3.5.2 for
more information)