C520 - User Manual
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If you have difculty with your conference phone, please try the suggestions below.
Finding the firmware version
As part of troubleshooting, you may need to provide the firmware version of the
conference phone.
1. When the phone is idle, press
.
2. In the Main Menu, press
2
A B C
(or scroll q to highlight 2 Status and press ).
3. In the Status menu, press
3
DEF
(or scroll q to highlight 3 Product Info and press ).
4. On the Product Info screen, press q until Firmware Ver. appears.
My Conference phone does not work at all.
After powering up the phone (see page 3), the LCD display will show the display
name and account number (extension) of the base. Press
to hear the dial tone. If any
of this does not happen, please try the following:
• Make sure the DC power cable is securely plugged into the phone and the power
adapter.
• Make sure the AC power cord is securely plugged into the power adapter and a wall
outlet not controlled by a wall switch.
I cannot dial out.
• Try all the above suggestions.
• Make sure there is a dial tone before dialing.
• If other telephones in your oce are having the same problem, the problem is in the
wiring or telephone service. Contact your IP PBX system administrator.
• Eliminate any background noise. Dial from another room in your oce with less
background noise.
Troubleshooting