Real-Time Media Software Defined Networking (RTM SDN) Activity Group

Today many enterprises and small-to medium-sized businesses worldwide are retooling their real-time media environments into a full collaboration suite, thereby increasing user productivity and enabling their workforce to communicate in a truly engaging mobile and rich multimedia experience.  Real-time media modalities such as voice, video, web conferencing, interactive white boards and virtual collaboration are now being delivered into a seamless integration of business workflows and applications.Unfortunately, many real-time deployments suffer from a variety of Quality of Experience (QoE) and reliability issues: including users having difficulty in establishing new connections, and once sessions are established may experience intermittent audio quality issues, pixelated and low-quality video, or sluggish virtual collaboration and white boarding sessions resulting in poor usability, frustrated users and low adoption.    These quality and reliability issues prevent organizations from realizing their full potential of their real-time collaboration investments.   This is because real-time media is highly dependent on the quality of the underlying network, with some collaboration solution vendors indicating that 60% to 80% of user experience problems are caused by issues with the underlying network.   In practice, troubleshooting these types of intermittent network issues for real-time media is complex and time-consuming and when issues have been identified, addressing them often requires highly specialized domain experts, costly infrastructure upgrades and/or complex network reconfigurations, all of which have a significant negative impact on total cost of ownership and business outcomes. 

The IMTC Real-Time Media Software Defined Networks (RTM SDN) Activity Group leverages the emergence of Software Defined Networking (SDN) as a powerful and flexible solution to address the challenges of deploying and supporting a high quality and reliable user experience for real-time media.   By allowing real-time media applications to dynamically interact with the network using a set of machine-to-machine APIs, we aim to ensure that application-level quality of experience and performance requirements can be met and automatically optimized by the underlying network infrastructure, without human intervention required.   RTM SDN provides visibility and automation to enable the rapid deployment of complex ecosystem of networks, real-time media applications, devices and services end-to-end.


The IMTC RTM SDN Activity Group engages in the following:

  • Define use cases
  • Analyze RTM SDN capabilities
  • Define a RTM SDN framework
  • Define APIs and data models
  • Technical Documents
  • Define a certification program
  • Liaison with other standards organizations

Technical Documents

  • Automating Quality of Experience and Diagnostics for Cloud-Hosted Real-Time Media Services is available here.  This document describes a typical cloud-based RTM deployment and the associated RTM-SDN use cases
  • Automating Quality of Experience (QoE) Use Case Specification is available here. This use case documents the detail scenarios for Unified Communications in automating Quality of Service (QoS), Traffic Engineering (TE) and Admission Control (AC)
  • Automating Diagnostics using SDN Use Case Specification is available here.  This use case documents the details on scenarios for automating diagnostics and root-cause analysis for real-time media applications
  • UC SDN ONF Real Time Media North Bound Interface Specification for the IMTC Automating QoE use-case.  This document is an open standard version, as defined by ONF, of the RTM SDN Interface.


Featured Interview: IMTC’s Pascal Menezes on Automated Diagnostics in SDN with Project Aspen
Featured Interview: Pascal Menezes Discusses QoS Standardization
Featured Interview: Pascal Menezes on Unified Communications, an SDN Killer App?
UC Over Wireless LANs
UC and SDN: Applications Controlling Networks


Webinar on RTM-SDN
Featured Video: UC SDN Improves End-User Experience, Lowers Total Cost of Ownership


How to Join

To subscribe to the Activity Group’s email list, scroll to the top of the page and click on the “Member Login” button to access the member portal, then select “Join a Work Group”, select the Activity Group and click on the “subscribe” link. You will receive a subscription confirmation in your email. If you have forgotten your password, click on the “Forgot/Need Password” on the sign in screen and it will be emailed to you. If you have not set up a user name and password or have any questions, contact the IMTC help desk at


Pascal Menezes
Chris Lauwers
RTM SDN Co-Chair
Founder & CEO, Ubicity Corporation
Phone: +425.818.4011