The AT&T E5812B is a 5.8GHz cordless telephone system with digital answering machine, caller ID, and dual handsets. It features a backlit display, speakerphone, phonebook (50 entries), call log (45 entries), redial (10 entries), adjustable ringer, voicemail indicator, and remote access. Supports English/Spanish/French. Below are the key specifications, installation, operation, programming, and troubleshooting instructions.
Unpack the phone and ensure all components are present: telephone base, 2 cordless handsets, 2 rechargeable battery packs (2.4V 600mAh Ni-MH), 2 battery compartment covers, base power adapter (9V DC 210mA), telephone line cord, user's manual. Install batteries in handsets and charge for 16 hours before first use. Place base away from water, heat sources, and interference. Use wall mount bracket if desired.
WARNING! Failure to read and follow all instructions carefully before installing or operating this control could cause personal injury and/or property damage. Save these instructions.
The AT&T E5812B is a cordless 5.8GHz phone with digital answering system (up to 40 minutes recording time). Features include backlit display, speakerphone, adjustable ringer, 50-name phonebook, 45-name caller ID log, 10-number redial, voicemail waiting indicator, call screening, remote access. Supports English, Spanish, French. Handset and base layouts include navigation keys, volume controls, dedicated buttons for mute, redial, find handset, INT.
Applications: Residential cordless telephony; Compatible with DSL/Caller ID; 2 handsets included.
CAUTION! To prevent electrical shock/equipment damage, unplug before installation. Use only supplied adapters. If in doubt about wiring, consult qualified electrician.
WARNING! Do not use on circuits exceeding 120 VAC; improper use can cause shock/fire. All wiring must conform to local/national electrical codes. Avoid use during storms, near gas leaks, or with pacemakers without consulting doctor (maintain 6-inch distance). Dispose of batteries per local regulations. Install DSL filter if using high-speed internet.
Shut off power if applicable. Remove old phone cover. Label wires before disconnecting. Disconnect wires one at a time; do not let fall into wall. Remove old base from wall.
Plug telephone line cord into base and wall jack (use DSL filter if needed). Plug power adapter into base and unswitched outlet. Install batteries in handsets (connector first, label up, slide cover). Place handsets in base/chargers to charge for 16 hours. For wall mount, attach bracket and slide base into place. Register additional handsets via MENU > Registration.
Terminal Designations: RJ11 jack for line cord on base; DC jack for power adapter.
Standard Setup: Wall jack to DSL filter (if needed) to base RJ11; Power outlet to adapter to base DC jack.
Wall Mount: Route cords through bracket slots.
CAUTION! All wiring must conform to local/national electrical codes. Do not use switched outlets.
After charging, lift handset and listen for dial tone. Test by dialing a number and adjusting volume. Verify CHARGE light on base.
View via CID; new calls with icon. Dial back with /FLASH. Save to phonebook via SELECT.
Access menu with MENU/SELECT. Set date/time, program phonebook, configure ringer.
Enter menu via MENU/SELECT. Adjust LCD language, key tone, ringer volume/tone, voicemail number, call block.
| Setting | Default | Options | Comments |
|---|---|---|---|
| LCD Language | English | English/Français/Español | Display text |
| Key Tone | On | On/Off | Beep on key press |
| Ringer Volume | Level 3 | 0-5/Off | Handset ringer |
| Ringer Tone | Tone 1 | 1-10 | Select ring pattern |
| Voicemail Number | None | Custom | Service provider number |
| Call Block | Off | On/Off, up to 20 entries | Block unknown calls |
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| Telephone does not work at all | Power off, low battery. | Check power adapter, charge battery; ensure base installed properly. |
| Display shows "No line" or no dial tone | Wiring issue, service problem. | Test line cord on another phone; contact provider; install DSL filter. |
| Handset not registered | Not registered. | Place in base to auto-register (60 sec). |
| Handset does not ring | Ringer off, volume low. | Set ringer via menu; check connections. |