home *** CD-ROM | disk | FTP | other *** search
-
- PART VII. THE ELECTRONIC SERIAL NUMBER - AN INTRODUCTION
-
- When a cellular phone is removed from factory packaging, the ESN
- normally can be found in the document package (or on a sticker stuck to the
- phone). This ESN is usually correct and system registration procedes
- quickly. If the phone is used or has been turned off for non-payment of
- bills, the person who restores the service needs the ESN in order to program
- the system with an MIN. Every manufacturer assigns their own ESN,
- consequently it is possible to have a number of the same ESN's, although
- each may be produced by a seperate manufacturer. For example, there may be
- a Motorola ESN of 123456, an Audiovox ESN of 123456, etc. With this in mind
- it is a possibility that a person could broadcast without changing the ESN,
- but rather changing the SCM and the SIDH.
-
- The ESN is a 32-bit number which uniquely identifies each unit. This
- ESN is factory programmed and installed and cannot be changed in the field
- without removing it and reprogramming a new chip. The ESN may or may not be
- related to the serial number stamped on the outside of the transceiver
- chassis. The ESN is encoded into messages which are interchanged with the
- cellular tower. The ESN must be provided when the phone is registered for
- service. The ESN is an 11-digit number. THE FIRST THREE NUMBERS ARE THE
- MANUFACTURERS DECIMAL CODE, THE NEXT TWO ARE RESERVED (BUT MAY CONTAIN ZEROS
- OR NUMBERS) AND THE REMAINING SIX ARE THE DECIMAL SERIAL NUMBER.
-
- *****************************************************************************
-
-