This technique is applied in the circumstances where an intersystem page message, e.g. an IS-41 ISPAGE2 message, is received in a first border switching module. The intersystem page message may originate from a second border switching module. In this case, the network determines whether the second border switching module is manufactured by a different network provider than the first border switching module. If so, a routine to address inconsistencies in the location area parameter is implemented so that an efficient paging strategy can be invoked.