Try moving away from any electronic device that may be causing interference, for example buzzing sounds or distorted speech.

Disable the telecoil when you are not using the telephone.

Most electronic devices produce electromagnetic fields. Headset cables, like antennae, pick them up.

Common sources of interference include:

• Radio and TV transmission towers
• Mobile phone towers
• Shopping centre and airport security systems
• Some digital mobile phones
• Battery chargers
• Fluorescent lighting
• Mains power boards