Programming Tree - Uniden 420 Owner's Manual

4-line system telephone with speakerphone and call waiting caller id

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TROUBLESHOOTING

Error Tone (Fast Busy Signal) Heard When Making an Intercom Call

The Do Not Disturb feature is activated at the extension you are calling.

Line Lights Remain On When No Line is Connected

Make sure the system is programmed for that line to be off. (See "Programming the Line

Usage" in PROGRAMMING OPTIONS.) See pg. 14.

Make sure that your Line Groups are programmed properly. (See "Programming Line Groups/

Private Line" in PROGRAMMING OPTIONS.) See pg. 16.

Disconnect all other devices (fax, modem, credit card reader, etc.) from any lines connected

to your phone. These devices can interfere with the system's data links.

Operation During a Power Failure

A 9-volt battery must be installed for power failure operation. See pg. 36.

No Call Waiting Caller ID Information While on a Call

You must subscribe to combined Caller ID with Call Waiting as a single service to see Call

Waiting information.

Call Waiting Caller ID records will not be displayed or logged during a 3-Way Conference Call.

Display Screen is Blank

Make sure the power cord is connected to both the phone and an electrical outlet that is not

controlled by a wall switch.

Verify that the AC outlet is working by plugging a lamp, etc. to test.

No Caller ID Information Received

Subscription to Caller ID service is required.

Caller ID information is transmitted by the telephone between the first and second rings. If

you answer a call before the second ring, the Caller ID information may not be displayed.

Call Waiting Caller ID records will not be displayed or logged during a 3-Way Conference Call.

MESSAGE WAITING/NEW CALL Light Flashes

Make sure you have deleted all messages on all lines.

It may be a false indicator from the Central Office. To clear, see "Turning the Message Waiting

Indicator On/Off" in ADDITIONAL FEATURES.