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Before use
Check for dial tone
• Press . If you hear a dial tone, and see that the status indicator turns green
on the base unit, the installaon is successful.
If you do not hear a dial tone:
• Recheck the installaon diagram and the connecons to the unit.
• Ensure the unit is correctly congured with the correct SIP account informaon.
For more informaon, see the C520 Administrator and Provisioning Guide.
• Consult your service provider if you require addional user accounts or if you
suspect a service disrupon is at fault.
Operang range
The maximum range between the conference phone and its wireless microphones and
any connected speakerphones can vary, depending on their locaons and the layout of
your oce.
When a wireless microphone is out of range, it must be returned to the charging cradle
to be able to reconnect with the phone.
If there is an incoming call while the wireless microphone is out of range, its green call
LED will not ash to indicate an incoming call. If the wireless microphone is moved
out of range during a telephone conversaon, there may be interference. To improve
recepon, move it closer to the conference phone.
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