Aviz Networks details Diameter GX session visibility

ASN provides real-time visibility into Diameter GX sessions by parsing and correlating CCR and CCA messages into subscriber policy records. The post explains how this helps mobile core operators track policy, charging, QoS, and session state in one view, with support for up to 3 million concurrent sessions and Kafka export. ## Research Overview ASN, also called Aviz Service Node, is described as processing Diameter GX signaling so operators can monitor subscriber policy sessions as they change over time. The article says the Gx interface connects PCRF and PCEF functions in the mobile core and carries policy and charging rules used in subscriber enforcement. The post frames Diameter GX as carrying operational data needed to manage traffic, subscriber identity, access context, and charging behavior. It says ASN correlates CCR and CCA messages to maintain session state across the full lifecycle. ## Key Findings The article lists the session data ASN extracts, including IMSI, IMEI, MSISDN, session IDs, routing details, charging rule names, QoS values, bearer usage, and access network context. It also notes that exported session state is keyed by IMSI when sent through Kafka. ASN is described as supporting an AVP merge model, where updated values replace prior ones while new AVPs are added to the session record. When multiple sessions exist for one IMSI, the system replaces older sessions with newer ones and triggers priority exports to keep historical data. ## Technical Breakdown The post says ASN handles CCR and CCA messages needed for Gx observability and keeps session state current across updates. It also says the system stores session timestamps, export type, and priority causes such as GX termination, GX session replace, and GTPC-delete. The metadata table shows three main areas: subscriber information, interface details, user information, charging rule information, QoS information, and session status. The article states that this structure gives operators a consolidated view of policy control and charging behavior for each session. ## Operational Impact The post says visibility into Diameter GX can help operators validate PCC rules, verify QoS settings, monitor charging rule updates, and troubleshoot establishment, update, and termination events. It also says operators no longer need to review individual Diameter packets to understand session state. The article says ASN can export rich session data for analytics, monitoring, and observability tools through Kafka. It also states the platform supports up to 3 million concurrent Diameter GX sessions. ## Leadership Perspective The article positions Diameter GX monitoring as a way to consolidate subscriber policy information for operational use in the mobile core. It links this visibility to better handling of policy validation, charging, and lifecycle tracking. For technical teams, the post presents ASN as a system for correlating signaling data into a session record that can be used for troubleshooting and downstream analysis. The article closes by restating that Diameter GX policies are enforced at the network edge and that ASN provides a combined view of the related signaling and state changes. This Blog Signals brief is a fact-based summary of the vendor blog and its focus on Diameter GX session visibility, policy validation, troubleshooting, and Kafka-based export for mobile core operations.