PYLE Audio 450 ユーザーズマニュアル

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User Guide for the SoundPoint IP 450 Desktop Phone
5 - 6
You turned off the ringer.
Do one of the following:
During an incoming call, lift the 
handset, press the Speakerphone 
key, or press the Headset key to 
obtain a dial tone.
Press the ringing Line Key or the 
Answer soft key to answer the call.
“Service Unavailable” appears 
on the screen.
The user pressed the New Call 
soft key, dialed a number with the 
handset on-hook, or attempted to 
make a call from the contact 
directory when the phone was 
not registered.
Check with your system administrator to 
see when your phone will be registered.
The line icon shows an 
unregistered line icon.
The phone line is unregistered.
Contact your system administrator.
Symptom
Problem
Corrective Action