1. Introduction
The Uniden TRU8888 is a 5.8 GHz digital expandable cordless phone system designed for clear and secure communication. This system includes a corded base unit with a handset, a cordless handset, and an integrated digital answering system. It supports expansion with up to ten cordless handsets (Uniden model #TCX800) using a single phone jack. This manual provides detailed instructions for setting up, operating, and maintaining your phone system.
Image 1.1: The Uniden TRU8888 5.8 GHz Digital Expandable Cordless Phone System, featuring the corded base unit and a cordless handset.
2. Package Contents
Verify that your package contains the following items:
- TRU8888 Base Unit with Corded Handset
- Cordless Handset
- Remote Charging Cradle for Cordless Handset
- One Phone Line Cord
- One Coiled Handset Cord
- Two AC Power Adapters
- One NiMH Battery Pack (for cordless handset)
- One Belt Clip (for cordless handset)
- User Guide (this document)
- Warranty Information
3. Setup
3.1 Connecting the Base Unit
- Connect one end of the phone line cord to the TEL LINE jack on the base unit.
- Connect the other end of the phone line cord to a standard telephone wall jack.
- Connect one AC power adapter to the DC IN 9V jack on the base unit.
- Plug the other end of the AC power adapter into a standard electrical outlet.
- Connect the coiled handset cord to the corded handset and the HANDSET jack on the base unit.
Important Note: This phone system may not function correctly when connected to a phone line that uses a DSL splitter. For optimal performance, connect the base unit directly to a dedicated phone jack if you experience issues with DSL service.
3.2 Installing the Cordless Handset Battery
- Open the battery compartment cover on the back of the cordless handset.
- Connect the NiMH battery pack connector to the jack inside the compartment, ensuring correct polarity.
- Place the battery pack into the compartment.
- Replace the battery compartment cover.
3.3 Charging the Cordless Handset
- Connect the second AC power adapter to the DC IN 9V jack on the remote charging cradle.
- Plug the other end of the AC power adapter into a standard electrical outlet.
- Place the cordless handset in the charging cradle. The charge indicator on the handset should illuminate.
- Allow the handset to charge for at least 15-20 hours before initial use to ensure full battery capacity.
3.4 Expanding Your System
The TRU8888 system is expandable to a total of ten handsets, including the corded handset on the base. Additional cordless handsets (Uniden model #TCX800) can be registered to the base unit. Refer to the instructions included with your additional handsets for registration procedures.
4. Operating Instructions
4.1 Making and Receiving Calls
- To Make a Call: Lift the corded handset or press the TALK button on the cordless handset. Dial the desired number.
- To Receive a Call: Lift the corded handset or press the TALK button on the cordless handset when the phone rings.
- To End a Call: Place the corded handset back on the base or press the END button on the cordless handset.
4.2 Using the Speakerphone
Both the base unit and cordless handset feature speakerphones.
- To Activate: During a call, press the SPEAKER button on the base or cordless handset.
- To Deactivate: Press the SPEAKER button again or lift the handset.
4.3 Caller ID
The system stores incoming caller information (name and number) in a Caller ID log. The base unit and each handset maintain their own logs.
- Viewing Caller ID: Use the UP/DOWN arrow keys to scroll through the Caller ID list.
- Dialing from Caller ID: Select an entry and press TALK to dial. If the number requires a '1' prefix, press the * key before dialing.
- Deleting Entries: Individual entries can be deleted. A 'delete all' option is available for clearing the entire log.
4.4 Phonebook / Memory Dialing
The system allows storage of up to 100 names and numbers in the base unit and an additional 100 in each cordless handset. Ten speed dial locations are available on the base unit.
- Storing Entries: Follow the on-screen prompts to add new contacts.
- Searching: Use the alphabetic search tool to quickly find contacts.
- Transferring Entries: Phonebook entries can be transferred between the base and handsets, and between handsets.
- Speed Dial: Assign frequently called numbers to the 10 speed dial locations on the base unit for quick access.
4.5 Intercom and Call Transfer
- Intercom: Use the handsets as an intercom system to communicate between different parts of your home or office.
- Call Transfer: Transfer an active call from one handset to another registered handset.
4.6 Mute, Hold, and Redial
- Mute: Press the MUTE button on the base or handset to temporarily silence your microphone.
- Hold: Place an active call on hold.
- Redial: Press the REDIAL button to call the last dialed number.
4.7 Volume Adjustment
Adjust the earpiece, speakerphone, and ringer volumes using the dedicated volume buttons or menu options on the base and handsets. Note that answering system playback volume may be adjusted separately during playback.
5. Digital Answering System
The TRU8888 features a built-in digital answering system with remote operation capabilities.
5.1 Recording Your Greeting
Follow the menu prompts on the base unit or cordless handset to record a personalized outgoing greeting for your answering system.
5.2 Playing Messages
New messages are indicated by an audible alert tone and a message counter on the base unit's four-line LCD. Message waiting indicators are also present on each supplemental handset's charging cradle.
- Press the PLAY button on the base unit to listen to messages.
- Messages can also be accessed and played back from the cordless handsets via the menu.
5.3 Remote Operation
Access and manage your answering system messages remotely by calling your phone number from an outside line and entering your security code.
5.4 Call Recording
The TRU8888 has the ability to record phone conversations. Be aware of and comply with all local, state, and federal laws regarding call recording in your jurisdiction.
6. Advanced Features
- Conferencing: Conduct three-way conversations with an outside line and two internal handsets.
- Room Monitoring (Baby Monitor): Use a cordless handset to monitor sounds in another room.
- Headset Compatibility: The cordless handset is compatible with certain headsets (sold separately) for hands-free operation.
- Tri-lingual Menu Display: Select menu display options in English, Spanish, or French.
- Distinctive Ring Tones: Assign different ring tones to specific callers or lines (if supported by your phone service).
7. Maintenance
7.1 Cleaning
Wipe the phone's surfaces with a soft, damp cloth. Do not use harsh chemicals or abrasive cleaners. Keep the charging contacts on the handset and cradle clean.
7.2 Battery Care
- The NiMH battery pack in the cordless handset typically lasts for several years.
- If the handset's talk time or standby time significantly decreases, it may be time to replace the battery pack. Use only Uniden-approved replacement battery packs.
- Do not dispose of batteries in a fire; they may explode. Recycle or dispose of batteries according to local regulations.
8. Troubleshooting
If you encounter issues with your Uniden TRU8888 phone system, try the following solutions:
- No Dial Tone:
- Ensure all cords (phone line, power adapters) are securely connected.
- Verify that the phone line is active by testing with another phone.
- If using DSL, ensure the phone is connected directly to a wall jack, not through a splitter, or use a DSL filter.
- No Power to Base/Handset:
- Check that AC power adapters are plugged into working electrical outlets.
- For cordless handsets, ensure the battery pack is correctly installed and fully charged.
- Poor Sound Quality (Static, Noise):
- Move the handset closer to the base unit.
- Ensure the base unit is not near other electronic devices that may cause interference (e.g., microwaves, Wi-Fi routers).
- The 5.8 GHz digital signal is designed for clarity; if issues persist, try a different phone jack.
- Cordless Handset Not Charging:
- Ensure the charging cradle's power adapter is connected.
- Clean the charging contacts on both the handset and cradle.
- Verify the battery pack is properly seated.
- Answering System Not Recording/Playing:
- Check that the answering system is turned ON.
- Ensure there is sufficient memory available for new messages.
9. Specifications
| Brand | Uniden |
| Model | TRU8888 |
| Telephone Type | Cordless with Corded Base |
| Frequency | 5.8 GHz Digital |
| Answering System Type | Digital |
| Expandability | Up to 10 Handsets (1 corded, 9 cordless) |
| Caller ID | Yes |
| Phonebook Capacity | 100 entries (base), 100 entries (handset) |
| Power Source | Corded Electric |
| Multiline Operation | Yes |
10. Warranty and Support
10.1 Warranty Information
Your Uniden TRU8888 phone system is covered by a limited warranty. Please refer to the separate warranty information document included in your package for details regarding warranty period, coverage, and terms. Keep your purchase receipt as proof of purchase.
10.2 Customer Support
For technical assistance, troubleshooting beyond this manual, or to inquire about replacement parts, please contact Uniden Customer Support. Contact information can typically be found on the Uniden website or in your warranty documentation.
