Lawful Interception of Voice over LTE (VoLTE)

Modern VoLTE Networks Require Unified Interception

Unlike traditional voice services, VoLTE calls traverse both the Evolved Packet Core (EPC) and the IP Multimedia Subsystem (IMS), making lawful interception significantly more challenging. Operators must capture Intercept Related Information (IRI) and Communication Content (CC) across multiple network elements while ensuring seamless interoperability, regulatory compliance, and uninterrupted service delivery.

A unified interception approach simplifies these challenges by integrating EPC and IMS network elements into a centralized platform. Supporting both standalone and combined deployment models, the architecture enables efficient interception workflows, secure information delivery to authorized agencies, and flexible deployment across existing LTE infrastructures. It also addresses VoLTE roaming scenarios, allowing operators to support inbound roamers using both active and passive interception techniques.

Unified VoLTE Interception Architecture

Built to support modern LTE networks, the platform unifies interception across EPC and IMS domains through centralized management, intelligent mediation, and standards-based interfaces. It enables scalable deployment, seamless integration with existing lawful interception systems, and efficient handling of VoLTE roaming scenarios while preparing operators for future network evolution and 5G migration.

Key Insights

• Understand the unique lawful interception challenges introduced by VoLTE networks.
• Explore unified interception across EPC and IMS network environments.
• Discover deployment approaches for standalone and integrated VoLTE interception.
• Learn how active and passive interception support inbound VoLTE roaming scenarios.
• See how standards-compliant architecture simplifies compliance while supporting future network evolution.