On the bottom of this equipment is a label that contains, among other information, the registration number and ringer equivalence number (REN) for this equipment. If requested, this information must be provided to the telephone company. 2. The USOC number of the registration jack for the equipment is RJ11C/RJ11W. 3. A FCC compliant telephone cord and modular plug is provided with this equipment. This equipment is designed to be connected to the CR59 telephone network or premises wiring using a c