BT 900 manual Technical information, Connection to the BT telephone network

Technical information

Environment

Your Synergy 900 should be kept free of dust, moisture, high temperature, vibration and 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

This equipment is not designed for making emergency calls when the power fails. Alternative arrangements should be made for access to emergency services.

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. The Synergy 900 base station has a REN of 1. Additional Handsets have a REN value of 0. 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.

Approval

Connection to the BT telephone network.

Synergy 900 is fully approved for connection to the BT network provided it is used according to the instructions in this guide. The telephone lines must provide Multi-frequency (Touch Tone) dialling capabilities.

It may be connected to Direct Exchange Lines and switchboards (PBXs) with new plan (plug and socket) arrangements.

Connecting to switchboards.

Synergy 900 is only approved for use with a compatible switchboard including those which do not provide secondary proceed indication. If you would like a list of suitable switchboards, contact BT on 154. If you do have a compatible switchboard, it cannot be guaranteed that the telephone will operate correctly under all possible conditions of connection. If you have any difficulties, contact BT on 154.

Generally Synergy 900 can be connected to any switchboard where a simple modern telephone can be used to make and receive calls. Synergy 900 is suitable for connection to switchboards which return secondary proceed indication.

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