Noun paging has 2 senses

• paging(n = noun.communication) Array - calling out the name of a person (especially by a loudspeaker system); "the public address system in the hospital was used for paging"
is a kind of utterance, vocalization
Derived form verb page₁

• paging(n = noun.communication) folio, page number, pagination - the system of numbering pages; Array
is a part of page
is a kind of number
Derived form verb page₃