Uniden TRU9485 Cordless Phone Logo
RICH SOBIESKI Posted on May 06, 2007

Tru 9485 The "Call Waiting ID" does not work. Trouble with the phone company, phone line, phone jack and power supply have been ruled out. A basic system reset was tried and CIDCW worked one time and then quit. "Caller ID" function does work. Uniden web site troubleshooting techniques tried. The only part of the CIDCW that does work is the tone received and the "incoming line" notice on the LCD. All other phone jacks were cleared but this did not help.

  • Anonymous Apr 05, 2008

    (1) When receiving a call, no Caller ID shows and the display shows only "Connecting", making Caller ID feature worthless. Therefore, can't answer the phone until after the outgoing message plays and I can hear who is calling. Many friends hang up, thinking we are not available. Also,
    (2) Phone is set to answer on 2 rings, but will connect only after 4 rings.
    Combination of (1) and (2) drives friends up the wall.
    (3) Handset shows "Out of range", even though the call may be from my own cell phone (within 1 mile), and all handsets are within 10 feet of the base.

    This weird behavior started just about 2 months ago, after the phone having worked fine for over a year.

    Called the phone service and they don't have any idea what is causing the problems, other than that they are sure they are not the cause.

  • eyrral Feb 16, 2009

    I have same problem with my Uniden DECT HAndsets and base. Called ID doe snot work, andthe arrrow keys on the handsets do not work.

    Any assitance is appreciated!


1 Answer



Look in the handset menu under global setup, scroll to CIDCW, click OK, and set to on or off depending what you want.

had the same problem and was trying to get solve the menu in the base

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How do I reactivate or enable Caller ID for my AT&T 1855? It used to work. I get nothing displayed and no call history. The manual doesn't help. There is an On/Off setting for CID-Call Waiting but that is...

Caller ID comes from the telephone service company to phones that have that feature enabled. You have to phone your Telco first. It is normally a paid feature.

No caller ID. TP company says I have service.

  • Did you fully charge your phone? - Make sure you fully charge for 16-24 hours .

  • Is the battery old? - Replace the battery.

  • Is the electrical outlet switch turned on? - If you are using AC (electrical) power, make sure that the unit is connected to a non-switched electrical outlet.

  • Are the connecting wires tight - Unplug the AC power converter from the unit and plug it back in.

  • Do you have Caller ID service with your telephone company - In order to receive Caller ID records, you must subscribe to the standard name and number Caller ID service available through your local telephone company. If the Caller ID works for normal calls but not on Call waiting calls, then you must contact your phone company to get the combined CID/CW service.

  • Caller ID shows up after second ring - Be sure to wait until the second ring before answering. Caller ID signals comes through after the first ring, if caller pick ups phone too soon Caller ID signal will not be transmitted to the handset.

  • Confirm that caller ID is still working on that particular line by checking another phone on the same line - If Caller ID is not coming through contact your phone company provider.

If this does not fix your problem, contact your authorized Service Center.*


How to eliminate calls you don't want

Add your phone number to the national "Do Not Call" list at www.donotcall.gov.
Also, your phone may just be missing the information it needs to decipher the data. Try getting a cheep caller ID unit and connect it to you phone line. See if it registers the phone numbers in question.

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Sounds more like a phone line problem than trouble with your phone. I suspect you have water in the line or some other problem that is causing trouble when the high ring voltage appears. Try disconnecting all phones and connect a plain old basic phone to one of your jacks. Better yet, if your house has a network interface jack on the outside, connect the phone there. Call your number and see if you still have the same trouble on the line. If so, call your phone company as the problem is in their wiring. If not, reconnect each phone in your house to see when the problem returns. Then you'll know which one is responsible.

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Found this on the VTECH support site regarding your model:

Tip 1 of 1
Caller ID and Call Waiting ID are subscription services, available from most local telephone service providers. You must subscribe to these services in order for the features to work on your phone. Contact your local telephone service provider for more information.

In addition, your caller must be calling from an area that supports caller ID.

Both you and your caller’s telephone service provider must use compatible caller ID systems.

If you subscribe to DSL service for this telephone line, DSL filters must be plugged into EVERY phone jack that has a phone. The DSL signal can cause caller ID disruption, static, noise and other issues on your line. DSL filters block the high frequency DSL signals from being transmitted to the telephone. If you are not using the DSL filters provided by the telephone company, this will cause static/noise and possibly caller id issues on your phones.

In most cases, we recommend you connect the plug end of the DSL filter into the telephone jack, then connect a telephone cord between the filter and your phone.

Please contact your service provider to obtain DSL filters and installation information.

Caller ID and Call Waiting ID may not be available for every call. Common reasons are incompatibilities between your and your caller’s service, transmission errors and answering calls before the ID data is received.

In addition if you would like to contact them or get more info on your phone, then use this link:


How can I clear the previous registrations from the TRU 9485 base?

Use the following steps to reset the base to factory settings for all TRU models:

1. Disconnect the power from the base

2. hold down the following three (3) keys: [dnd] + [middle soft key] + [*]

3. While holding down the keys, plug in the base (hold the keys down until you hear a long beep).

According to Uniden Tech support, this is supposedly all it takes to reset the phone.

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