Uniden DMX 778 Series User Manual
Page 82

[ 8 1 ] T r o u b l e s h o o t i n g
w w w . u n i d e n . c o m
The handset doesn't ring 
or receive a page.
• Make sure that you are not too far from the base.
• Charge the batteries in the handset for 15-20 hours by placing the handset on 
the base or charging cradle.
• Change the Digital Security Code (see page 13).
Severe noise 
interference.
• Keep the handset away from microwave ovens, computers, remote control toys,
wireless microphones, alarm systems, intercoms, room monitors, fluorescent 
lights, and electrical appliances.
• Move to another location or turn off the source of interference.
The Caller ID does not 
display.
• The call was placed through a switchboard.
• Call your local telephone company to verify your Caller ID service is current. 
There may be a problem with your Caller ID service.
You cannot register the 
handset at the base.
• Charge the battery pack for 15-20 hours.
• Change the Digital Security Code (see page 13).
The handset doesn't 
communicate with other 
handsets.
• Change the Digital Security Code (see page 13). 
• Make sure that you have registered all handsets.
An extra handset can't 
join the conversation.
• Make sure there are not 2 handsets already using the conference feature.
• Make sure that another handset is not in privacy mode.
Room Monitor feature 
does not work.
• Make sure to place the handset(s) within the range of the base.
Symptom
Suggestion
UP720.book Page 81 Wednesday, October 6, 2004 1:21 PM
