NETSCOUT Case Studies Effectively Troubleshoot VoLTE Call Drops

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	Effectively Troubleshoot VoLTE Call Drops NETSCOUT

Effectively Troubleshoot VoLTE Call Drops

NETSCOUT

Applicable Industries	Telecommunications
Applicable Functions	Business Operation
Use Cases	Remote Asset Management
Services	System Integration
Challenge	A tier one operator is looking to accelerate the uptake and use of VoLTE services. As part of a regional promotion, subscribers have been offered new VoLTE-enabled devices. However, initial employee trials with these devices in the region indicate that VoLTE call drop ratios are increasing. The operator is concerned that isolating the cause of these drops will consume troubleshooting teams and require costly escalations. Furthermore, the inability to resolve the problems quickly will delay the targeted launch of VoLTE services. There are a number of issues that can contribute to VoLTE call drops. Coverage gaps often occur due to changes in topology or neighbor cell interference. Visibility to the SIP messages between the Call Session Control Function and the Telephony Application Server can provide valuable information about current and future RAN coverage needs. Phased upgrade activities can result in mismatched software loads and incompatible handover situations between eNodeBs. Read More
About Customer	The customer in this case study is a tier one operator who is looking to accelerate the uptake and use of VoLTE services. They have offered new VoLTE-enabled devices to their subscribers as part of a regional promotion. However, they are facing challenges with increasing VoLTE call drop ratios during initial employee trials with these devices in the region. The operator is concerned about the potential consumption of troubleshooting teams and the need for costly escalations to isolate the cause of these drops. They are also worried about the delay in the targeted launch of VoLTE services due to the inability to resolve the problems quickly. Read More
Solution	NETSCOUT’S VoLTE solution was implemented to address the challenges faced by the operator. The solution enables visibility across RAN, CORE and IMS domains for the most comprehensive troubleshooting of every VoLTE call hop and handover. It efficiently pinpoints areas where additional capacity or signal boosts are needed to ensure connectivity. The solution also allows for real-time monitoring of interoperability issues introduced during maintenance windows. By examining failure cause messages between the PGW and PCRF, the solution helps to isolate problematic MME tear down of associated bearers. Read More Log in to view content
Contents

Applicable Industries

Telecommunications

Applicable Functions

Business Operation

Use Cases

Remote Asset Management

Services

System Integration

Challenge

A tier one operator is looking to accelerate the uptake and use of VoLTE services. As part of a regional promotion, subscribers have been offered new VoLTE-enabled devices. However, initial employee trials with these devices in the region indicate that VoLTE call drop ratios are increasing. The operator is concerned that isolating the cause of these drops will consume troubleshooting teams and require costly escalations. Furthermore, the inability to resolve the problems quickly will delay the targeted launch of VoLTE services. There are a number of issues that can contribute to VoLTE call drops. Coverage gaps often occur due to changes in topology or neighbor cell interference. Visibility to the SIP messages between the Call Session Control Function and the Telephony Application Server can provide valuable information about current and future RAN coverage needs. Phased upgrade activities can result in mismatched software loads and incompatible handover situations between eNodeBs.

About Customer

The customer in this case study is a tier one operator who is looking to accelerate the uptake and use of VoLTE services. They have offered new VoLTE-enabled devices to their subscribers as part of a regional promotion. However, they are facing challenges with increasing VoLTE call drop ratios during initial employee trials with these devices in the region. The operator is concerned about the potential consumption of troubleshooting teams and the need for costly escalations to isolate the cause of these drops. They are also worried about the delay in the targeted launch of VoLTE services due to the inability to resolve the problems quickly.

Solution

NETSCOUT’S VoLTE solution was implemented to address the challenges faced by the operator. The solution enables visibility across RAN, CORE and IMS domains for the most comprehensive troubleshooting of every VoLTE call hop and handover. It efficiently pinpoints areas where additional capacity or signal boosts are needed to ensure connectivity. The solution also allows for real-time monitoring of interoperability issues introduced during maintenance windows. By examining failure cause messages between the PGW and PCRF, the solution helps to isolate problematic MME tear down of associated bearers.

Impact #1	Enabled visibility across RAN, CORE and IMS domains for comprehensive troubleshooting of every VoLTE call hop and handover.
Impact #2	Efficiently pinpointed areas where additional capacity or signal boosts were needed to ensure connectivity.
Impact #3	Allowed for real-time monitoring of interoperability issues introduced during maintenance windows.

Impact #1

Enabled visibility across RAN, CORE and IMS domains for comprehensive troubleshooting of every VoLTE call hop and handover.

Impact #2

Efficiently pinpointed areas where additional capacity or signal boosts were needed to ensure connectivity.

Impact #3

Allowed for real-time monitoring of interoperability issues introduced during maintenance windows.

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Overview

Effectively Troubleshoot VoLTE Call Drops

Operational Impact