TELEPHONE SERVICE PROBLEMS

No Dial Tone

Check that the connections to the telephone line and the AC power are correct and secure.

Try a different line.

Echoes, Short Silences, or Clipped Speech

This is normal for the first few seconds of a call as the telephone adjusts to the room acoustics.

Minimize any external noise. Close doors and windows. Avoid rustling papers on the conference table. Do not touch the phone during a call.

Try calling again to see if another line provides a better connection.

MAINTENANCE INFORMATION

Treat your telephone equipment with care for trouble-free performance.

Avoid putting near heating appliances and devices that generate electrical noise (for example, motors and florescent lamps).

Clean your telephone equipment with a damp cloth. Stains may be removed with a mild soap. Do not use liquid or aerosol detergents or cleaning agents.

Do not expose to direct sunlight or moisture

Retain the original package in case you need to ship it at a later date.

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Cortelco CP4400 instruction manual Telephone Service Problems, Maintenance Information