Paradyne Compshere 3000 Series Installation Manual page 5

Users should ensure for their own protection that the electrical ground connections of the power
utility, telephone line and internal metallic water pipe system, if present, are connected together.
This precaution may be particularly important in rural areas.
The Load Number for this equipment is listed on a label on the device. The Load Number (LN)
assigned to each terminal device denotes the percentage of the total load to be connected to a
telephone loop which is used by the device to prevent overloading. The termination on a loop may
consist of any combination of devices subject only to the requirement that the total of the Load
Numbers of all devices does not exceed 100.
United Kingdom
Ringer Equivalence Number
The Ringer Equivalence Number (REN) is a customer guide indicating approximately the
maximum number of items of apparatus that should be connected simultaneously to the telephone
line. The sum of the RENs should not exceed four. This value includes any BT-provided
instrument which may be assumed to have a REN of 1 unless marked otherwise. The REN of this
apparatus is 1.
Connection to Leased Lines
If any other apparatus, including cable or wiring, is connected between the apparatus and the point
of connection to any speechband circuit, then all that other apparatus shall comply with the
following:
No d.c. interaction is intended between the apparatus and the telephone network.
3000-A2-GA31-D0
Users should not attempt to make such connections
themselves, but should contact the appropriate electric
inspection authority, or electrician, as appropriate.
1. The overall transmission characteristics of all that other apparatus shall be such as to
introduce no material effect upon the electrical conditions presented to one another by the
apparatus and the speechband circuit; and
2. All that other apparatus shall comprise only:
(i) apparatus approved for the purpose of connection between the apparatus and a
speechband circuit; and
(ii) cable or wiring complying with a code of practice for the installation of equipment
covered by this part of BS 6328 or such other requirements as may be applicable.
CAUTION
July 1999
Important Information
D