SIP/RTP Correlation

VoIP subscriber and user-awareness

VoIP Subscriber- and User-Aware Forwarding

It just got easier — and more efficient — to monitor voice- and video-over-IP (VOIP) sessions carried in Real-Time Transport Protocol (RTP) and managed by Session Initiation Protocol (SIP) signaling. It’s called the SIP/RTP Correlation application, and is a licensable and intelligent addition to the GigaSMART® engine that enables enterprises and service providers to monitor VoIP traffic.

Because it understands the stateful nature of the SIP protocol, the SIP/RTP Correlation application can match and pass an identified user’s SIP signaling and RTP media sessions to the appropriate analytics, performance and security subsystems. That’s a big help ensuring an accurate view of the session performance, the user’s quality of experience and secureness of the communication.

With the SIP/RTP Correlation application, service providers and enterprises can now intelligently forward VoIP sessions to specific tools by filtering on ranges of or specific user IDs, sampling just a percentage of media sessions and/or balancing the aggregate SIP and RTP sessions.

Benefits of the SIP/RTP Correlation Application:

  • More efficient, effective tool processing throughput
  • Improved analytics accuracy from reliable correlation of user sessions
  • Enables improved user experiences and service monetization with more accurate end-user quality of experience metrics
  • More reliable accounting, billing and subscription management
  • Fewer errors through accurate correlation of subscriber or user data fragmented in transit

Take advantage of our new bundled GigaSMART apps to be subscriber-aware!

“All the voice traffic on the Gamma network will go through at least one Gigamon node.”

Gordon Ballantyne, Head of Core Networks, Gamma Telecom

GigaSMART Features

GigaSMART® offers several essential traffic intelligence services required for deep observability into infrastructure blind spots.

NetFlow Generation

Delivers basic Layer 2–4 network traffic data to analysis tools.

Source Port Labeling

Provides context to packets and identifies behaviors and threats based on network location.

Adaptive Packet Filtering

Identifies patterns across any part of the network packet, including the packet payload.


Targets, identifies, and eliminates duplicate packets, blocking unnecessary duplication and sending optimized flows.

Packet Slicing

Truncates packets while preserving the protocol headers required for network analysis.

Advanced Load Balancing

Divides and distributes traffic among multiple tools based on a variety of data points.

Advanced Flow Slicing

Reduces bandwidth usage by slicing payloads and packets from long data flows.


Provides customizable data protection by overwriting specific packet fields with a set pattern. 


Alleviates blindness of business-critical traffic at remote sites, virtualized data centers, or in the public or private cloud.

Application Visualization

Provides a complete view of the applications running on your network.

Application Filtering Intelligence

Extends Layer 7 visibility to thousands of common and proprietary applications.

Application Metadata Intelligence

Provides application visibility to identify performance and quality issues, and potential security risks.

GTP Correlation

Enables mobile service providers to monitor subscriber data in GPRS Tunneling Protocol tunnels.

5G Correlation

Forwards subscriber sessions to specific tools by filtering on subscriber, user device, RAN, or network slice IDs.

FlowVUE Flow Sampling

Provides subscriber IP-based flow sampling.

SIP/RTP Correlation

Enables enterprises and service providers to monitor VoIP traffic.

SSL/TLS Decryption

Creates a secure channel between the server and the end user's computer or other devices as they exchange information.

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