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 8620/8622 IP Phone User Guide – Issue 14, June 2010

Page 7

The phone has several audio and visual signals to indicate feature activity. The following are a 
few helpful tips:

 •

Any buttons that are lit or blinking indicate call or feature activity.

 •

All phone button lamps illuminate at the same time for a few seconds when the IP phone 
is reset or powered on. 

 •

The following actions may cause an error tone:

o Pressing an invalid button combination. 
o Selecting a restricted feature. 
o Dialing a restricted or invalid number. 
o Dialing too slowly between digits. 
o Waiting too long before performing the next step. 
To correct, hang up and try again.

 •

Many features “time-out” if you wait too long before performing the next step. If this 
happens, you must start over.

 •

“Off-hook” means the handset is in use. “On-hook” means the handset is idle.

Observe the following comfort and safety tips when using the IP phone:

 •

Do not cradle the handset: Prolonged use of the handset can lead to neck, shoulder, or 
back discomfort, especially if you cradle the handset between your neck and shoulder. If 
you frequently use the IP phone, you might find a headset more comfortable. See 
“Headset Instructions” on 

.

 •

Adjust the viewing angle: The built-in stand tilts to give you a better view of the buttons. 
See “Adjusting the Viewing Angle” on 

.

 •

Protect your hearing: Because prolonged exposure to loud sounds can contribute to 
hearing loss, keep the volume at a moderate level. You can adjust the volume levels of the 
handset receiver or headset. See “Changing Volume Levels” on