CS5121 Telephone User's Manual
www.vtechphones.com
56
Troubleshooting
Problem Suggestion
The messages on 
the system are very 
difcult to hear.
Press  VOL+ on the telephone base to increase the speaker volume.•
My cordless handset 
beeps and is not 
performing normally.
Make sure the power cord is securely plugged into the telephone base. Plug the unit into a 
different working electrical outlet not controlled by a wall switch.
Move the handset closer to the telephone base. It may be out of range.
Reset  the  telephone  base  by  unplugging  the  unit’s  electrical  power.  Wait  for  15  seconds 
and plug it back in again. Allow up to one minute for the handset and the telephone base to 
synchronize.
Other electronic products can cause interference to your cordless telephone. Try  installing 
your telephone as far away from these electronic devices as possible: wireless routers, radios, 
radio towers, pager towers, cellular telephones, intercoms, room monitors, televisions, personal 
computers, kitchen appliances and other cordless telephones.
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Common cure for 
electronic equipment
If the unit is not responding normally, try putting the handset in the telephone base. If it does 
not respond, try the following (in the order listed):
Disconnect the power to the telephone base.
Disconnect the battery on the handset.
Wait a few minutes before connecting the power to the telephone base.
Re-install the battery and place the handset into the telephone base.
Wait for the handset to synchronize with the telephone base. Allow up to one minute for this 
to take place.
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