User's Manual
User Guide for the SoundPoint IP 670 Desktop Phone
6 - 4
Audio
Calling
Symptom Problem Corrective Action
There is no audio on the 
headset.
The connections are not correct. Do one of the following:
• Ensure the headset is plugged into the 
jack marked Headset at the rear of the 
phone.
• Ensure the headset amplifier (if 
present) is turned on and/or the 
volume is correctly adjusted. If the 
amplifier uses batteries, check that 
they are fully charged.
You are using a headset and the 
people you call hear echo.
There may be an issue with the 
echo cancellation feature of your 
headset.
Do the following:
• Press the Menu key, then select 
Settings > Basic > Preferences > 
Headset > Echo Cancellation.
Using the arrow keys, select Enabled, 
and then press the Select soft key.
• Contact your system administrator.
Symptom Problem Corrective Action
There is no dial tone. Power is not correctly applied to 
the SoundPoint IP 670 phone.
Do one of the following:
• Check that the screen is illuminated.
• Make sure the LAN cable is inserted 
properly at the back of the phone (try 
unplugging and re-inserting the 
cable).
• If using in-line powering, have your 
system administrator check that the 
switch is supplying power to the 
phone.
Dial tone is not present on one of 
the audio modes.
Do one of the following:
• Switch between Handset, Headset (if 
present) or Hands-Free 
Speakerphone to see if the dial tone is 
present for one of audio modes.
• If the dial tone exists on another audio 
mode, connect a different handset or 
headset to isolate the problem.
The phone is not registered. Contact your system administrator.










