VOLTE ROAMING

The purpose of this module is to provide an overall understanding of what 4G Roaming is and how it works. Dhiraj Wazir explains the basics of 4G, its history, and its main characteristics.

• 4G technology, why is it important?
• Importance of 4G networks?
• 4G vs 2G/3G
• Global status of 4G Roaming.

In this module, we look at what the LTE network looks like, what are the various elements and how they differ from those we’ve seen in 2G/3G.

• 4G Network elements
• Network interfaces in 4G
• Introduction to Diameter
• CSFB
• QoS for LTE Roaming

Building on the fundamentals of the previous modules, we introduce VoLTE Roaming, its importance and its history.

• Importance of VoLTE Roaming
• Status and forecasts
• Impact of decommissioning
• Business case behind VoLTE Roaming

In this module, we look at the network elements involved in enabling VoLTE and VoLTE Roaming. We introduce IMS and how it functions.

• IMS network
• Network elements
• Comparison with legacy voice networks.

In this network we look at the various elements required for a roaming launch. We take a deeper look at testing involved and what challenges operators may face.

• IREG
• TADIG
• Solutions
• Third party solutions

VoLTE roaming fundamentally changes the way voices works and the way operators must charge for it. In this module we look at the fundamental shift in the cost structure, and the potential commercial impact. We look at the various options for charging and their impacts and also what the market trend is.

• Cost structure
• Charging options
• Market trends

In this module, we look at what the various challenges with VoLTE Roaming. These include emergency calling, lawful intercept, handset issues, short code dialling and fraud aspects.

In this module, we look at some real-life cases of MNO’s experiences of launching VoLTE Roaming. What were the challenges they faced and how they resolved these challenges.