This book explains the various types of paging systems, how they operate, and changes that occur in the paging industry. Traditional paging services have seen the decline in the world more than 65% in the number of traditional paging services between 1988 to 2003. You will find that the cycle of the paging system is likely to continue because of paging systems generally have a much better and more reliable in building radio coverage, has a smaller device at low cost (pager), and service costs can be substantially less than other systems such as cellular radio . Two types of paging systems, one-way or two-way paging system can provide these messages. The only way paging systems allow the sending of messages from the paging system to the pager. Two-way paging system allows confirmation and response messages from the pager to the system as well. Paging system using various types of radio protocols to provide paging and messaging services. Initial paging system is activated or deactivated only signal at a given frequency to warn users of a particular page. Discussed is the industry standard paging keys, including as POCSAG, ERMES, FLEX, and reflexes to standardize equipment and services. Simple description of the type of paging system ? How to change the paging industry to compete with other wireless systems ?