Revision 2715378 of "Calling-party camp-on" on enwiki

In [[telecommunication]], a '''calling-party camp-on''' is a [[service feature]] that enables the [[system]] to complete an [[access attempt]] in spite of temporary [[unavailability]] of system [[transmission]] or [[switching]] facilities required to establish the requested access. 

<i>Note:</i>  Systems that provide calling party camp-on [[monitor]] the system facilities until the necessary facilities become available, and then proceed to complete the requested access. Such systems may or may not issue a [[system blocking signal]] to apprise the [[originating user]] of the access [[delay]].

Source: from [[Federal Standard 1037C]]