Troubleshooting

The unit will not operate/no dial tone:

Verify the TALK Button is lit.

Verify the AC Adapter is securely plugged into the base of the telephone.

Verify the telephone line cord is securely plugged into the wall jack and the telephone.

Verify that the handset battery is properly installed.

Make sure the handset battery is fully charged.

Make sure the base antenna is in an upright position.

Verify the telephone is in the correct dialing mode, tone (touch) or pulse (rotary).

Make sure you are in the usable range of the base station.

Reset the security code by placing the handset in the base for 5-10 seconds.

The phone does not ring when you receive a call:

Make sure the RINGER switch on the handset and base are set to ON.

Verify the AC Adapter is securely plugged into the base of the telephone.

Verify the telephone line cord is securely plugged into the wall jack and the telephone.

Verify that the handset battery is properly installed.

Make sure you are in the usable range of the base station.

You may have too many extensions on your line. Try unplugging a few devices.

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Plantronics 435 manual Troubleshooting