To reduce noise originating from your line, try:

• Disconnecting your line and calling back in.
• Switching from your cell to a landline. Landlines offer better audio quality and sustained connectivity.
• Turning off speakerphone. Speakerphones can degrade call quality with echo, ambient and white noise.
• Picking up the telephone handset. Handsets usually have better sound characteristics than speakerphones and headsets.
• Disconnecting hands-free devices.
• Moving electronic devices such as PDAs, cell phones and laptops away from the active phone.