PACS NETWORK SIGNALING USING AIN ISDN

This article describes network signaling for PACS (Personal Access Com munications System). One of the distinguishing features of PACS is tha t the Advanced intelligent Network (AIN) protocol is used, and the gen eral AIN switch and service control point (SCP) provide the flexibilit y to implement PCS network/service applications. The basic method for providing PCS support transparently to the AIN switch, at least from a call processing point of view, is that PCS-related messages are sent directly from the radio system to the AIN SCP by a sort of ''tunnel'' through the AIN switch. The PACS design has illustrated a new approach , interconnecting the radio system with the PSTN via general AIN switc hes. However, extra network traffic will be created by the NCA signali ng. The performance of PACS network signaling is an open issue for fut ure investigation.