Technical information
Environment
Your Response 15 should be kept free of dust, moisture, high temperature and vibration. It should not be exposed to direct sunlight. Do not stand it on carpets or other surfaces which generate fibres, or place it in locations which prevent the free flow of air over its surfaces.
Warning
The apparatus is only designed to be operated in a normal office or domestic environment where the relative humidity does not exceed 75%. It should not be used in bathrooms or near water.
If the power fails
If the battery warning light was not lit before the power was lost, all information should be retained for at least one hour (up to 6 hours for a fresh alkaline battery).
If the light was on, information may be lost even if a
If no battery was installed, all information will be lost and the Response 15 will power up as new when power is restored.
How many phones
can you have?
All items of telephone equipment have a Ringer Equivalence Number (REN), which is used to calculate the number of items
that may be connected to any one telephone line. Your Response 15 has a REN of 1. Any other instrument provided by BT may be assumed to have a REN of 1 unless stated otherwise. A total REN of 4 is allowed. (For example: if your Response 15 is used in conjunction with 3 extension telephones, each with a REN of 1, the total REN is 4).
If the total REN of 4 is exceeded, the telephones may not ring. With different telephone types there is no guarantee of ringing, even when the REN is less than 4.
Customer Helpline
If you have problems with your machine, call the Response 15 Helpline Service,
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