US Robotics 005689-03 Manual page 63

an acceptable method of connection. In some cases, the company's inside wiring associated
with a single-line, individual service may be extended by means of a certified connector assembly
(telephone extension cord.) The customer should be aware that compliance with the above
conditions may not prevent degradation of service in some situations. Currently,
telecommunication companies do not allow users to connect their equipment to jacks except in
precise situations that are spelled out in tarriffing arrangements with those companies.
Repairs to certified equipment should be coordinated by a representative designated by the
supplier. Any repairs or alterations made by the user to this equipment, or equipment
malfunctions, may give the telecommunications company cause to request the user to disconnect
the equipment.
For your own protection, make sure that the electrical ground connections of the power utility,
telephone lines, and internal metallic water pipe system, if present, are connected together. This
precaution may be particularly important in rural areas. CAUTION: Do NOT attempt to make
such connections yourself. Instead contact the appropriate electric inspection authority, or
electrician, as appropriate.
"NOTICE: The Ringer Equivalence Number (REN) assigned to each terminal device
provides an indication of the maximum number of terminals allowed to be connected to a
telephone interface. The termination on an interface may consist of any combination of devices
65