ETSI publishes TR 103 639 – a new standard for Timeslicing KPIs for RTP

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Press Release

Voipfuture: ETSI publishes TR 103 639 – a new standard for Timeslicing KPIs for RTP

Hamburg, Germany – March 24th 2021

ETSI (the European Telecommunications Standards Institute – known for its globally adopted mobile communication standards like UMTS, LTE or TETRA) has published a new technical report on media KPIs for voice communications. The standard released by ETSI in March 18, 2021, sets out a framework for Timeslicing KPIs for RTP based speech transmission.

The technical report (TR) is the result of collaboration between tier-1 telco providers supported by government agencies and industry partners such as Voipfuture.

It is the first standard that defines meaningful service performance KPIs for the media plane, thus complementing the widely used SIP signaling KPIs defined in RFC 6076.

The issues of volatility in speech transmission performance and varying call durations lead to some drawbacks like loss of temporal detail, lack of comparability and problematic aggregation. They are addressed by timeslicing measurement methods, which analyse RTP flow characteristics for fixed time segments.

Such timeslicing methods generate metrics that allow to calculate speech transmission KPIs based on media volume. Annex A of TR 103 639 defines a set of KPIs (i.e. the Good Minute Ratio, GMR) as an industry standard. These KPIs offer a Bird’s Eye View on Voice Service Performance.

Download full version of TR 103 639

Voipfuture

Press contacts

Carsten Niepmann

Marketing

+49 1723933135

cniepmann@voipfuture.com

 

Dr. Michael Wallbaum

Product

+49 40 688 900 100

mwallbaum@voipfuture.com

Voipfuture now joined the Jobrad program

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2021-02-24

Voipfuture now joined the Jobrad program

For years we have been helping large and small telecommunications service providers to ensure the health of voice traffic. Now, we thought, it is time to do something for the health of our team. On the road.

Voipfuture now joined the Jobrad program, which allows our team members to lease bicycles. The German government covers half of the cost. Voipfuture tops up. Which is great. Buying a bike becomes easy. And costs next to nothing. Or nothing at all. The good feeling of doing something for your own health comes with it. And the world. And a breath of fresh air. As someone who benefits from it, I can only say one thing: Awesome.

SIP: Add focus to your bird’s eye view

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2021-02-21

SIP: Add focus to your bird’s eye view

Sometimes there is just too much data and focusing on the really important stuff becomes harder and harder. What helps is aggregation. It improves clarity. And decision making.
Voipfuture’s Qrystal aggregates detailed measurement data to any dimension of interest. What you get is high-level yet accurate information. On regions, branch offices, interconnection partners, VIPs, routes and destinations.
You simply get things done more efficiently. Means: reduced stress and improved results. More info? Happy to help.

Stop looking for SIP faults. Start finding them

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2021-02-21

SIP: Add focus to your bird’s eye view

The Voipfuture way of doing things is: Go deep. Recognize failure patterns. And finally, automate everything through appropriate indicators. This immediately makes issues visible. On call, trunk or cell level.

It empowers the operational team to achieve efficiency. So no time is wasted on manual, routine and repetitive tasks. Because both really is important – signaling quality and the team’s time too.

Critical Loss Densitiy

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Intelligent Indicators

2021-01-14

The worst loss isn’t burst loss

Everybody knows that bursts of lost packets negatively impact speech quality of VoIP calls. The gaps in the packet stream directly translate to gaps in the audio. But there is an even worse form of packet loss.

Imagine a series of frequent but individual packet losses, e.g. packet lost, packet received, packet lost, packet received, etc. We call this pattern Critical Loss Density (CLD).

It’s clear that such a loss pattern is bad for speech quality, because loss concealment mechanisms – for example, replaying the last received packet – cannot mask a multitude of gaps stretching over time. This loss pattern is often caused by low level issues with network links such as old or broken fibers.

Qrystal is the only passive monitoring solution on the market that can detect CLD and identify the root cause.

 

Happy to help.

Carsten

Beware of all call drops

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2020-11-26

Beware of all call drops

As a user you know for sure when your call drops. Yet, as a mobile service provider you probably don’t. The reason is that conventional call drop detection relies on data provided by individual network elements, e.g. in the RAN. This view often does not match the user experience.

We at Voipfuture care about user experience and thus implemented call drop detection based on the analysis of user behavior. When your 4G call drops, you will typically try to re-establish the call. Qrystal takes these redial calls and inspects their RFC 3326 SIP reason headers. Machine-learning is then used to determine the headers that indicate call drops.

The result: Qrystal’s dropped call ratio (DCR) is in line with values determined by drive tests. Even better: the data is available 24/7, for your entire network.

Bearer Loss Events

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2020-11-11

Bearer Loss Events

How to efficiently deal with dropped calls

For customers, there is little that is more dissatisfied than call drops. But the equation is simple: more mobility (i.e. more handovers) and more traffic load lead to more dropped calls. Extremely helpful in understanding them are SIP reason headers (RFC 3326). They indicate why a SIP request was issued. Specifically, when a call is dropped for technical reasons, the final BYE message includes a reason header specifying the actual drop cause. Qrystal’s statistical analysis of these reason headers is thus key to identifying and solving dropped calls in VoLTE services. A recent customer case solved using Qrystal impacted millions of customers – and demonstrated that the network is not kidding when it reports “Dedicated Bearer Lost”.

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Data protection
We, VOIPFUTURE GmbH (Registered business address: Germany), would like to process personal information with external services. This is not necessary for the use of the website, but allows us to interact even more closely with them. If desired, please make a choice: