Users - AudioCodes C455HD Series User's And Administrator's Manual

CHAPTER 7 Troubleshooting

Users

Read the following if an issue with your phone occurs. Contact your network administrator if
necessary. Network administrators can also use this documentation as reference.
Symptom
Phone is off
(no screen
displays and
LEDs)
Phone is not
ringing
Screen
display is
poor
Headset has
no audio
Figure 7-3: Audio
Table 7-1: Troubleshooting
Problem
Phone is not Make sure the AC/DC power adapter is attached
■
receiving firmly to the DC input on the rear of the phone.
power
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.
Ring volume is Increase the volume (see Adjusting Ring Volume on
■
set too low page 70)
Screen ■ Adjust the phone's screen brightness
settings
Headset not ■ Make sure your headset is securely plugged into the
connected headset port located on the side of the phone.
properly
■ Make sure the headset volume level is adjusted
adequately (see Adjusting Headset Volume on
page 70).
C455HD | Users & Administrator's Manual
Corrective Procedure
- 93 -