Mobile Networks

Simply using HD codecs is not sufficient to ensure premium voice quality. Voipfuture’s Qrystal provides insights on individual cell performance, reasons for call drops and other key data that will give you a clear, real-time picture of the actual quality of your voice service.

Dedicated support for VoLTE and VoWifi services

Qrystal Probes can be deployed in the EPC at the S1-U and S11 interfaces and on the border to the IMS at the Mw interface. The information gathered at the S1-U and S11 interfaces links problems of individual calls – call setup failures and media stream impairments, for example – directly to events in the LTE network

Statistics and KPIs for each cell

With Qrystal you can define LTE trunks, which provide media quality statistics for eNodeB ↔ SGW network segments. LTE trunks consider the media quality of all VoLTE calls routed over that trunk. With LTE trunks, it is possible to isolate eNodeBs and even individual cells that cause quality degradation of the VoLTE service.

Added crucial business intelligence layer

All the information generated by Qrystal can be used by the Qrystal Intelligence module (or any other business intelligence solution) to create network maps and other views that present the performance of individual cells and eNodeBs. This is particularly useful because performance data is not only mapped to cell location, but also to equipment vendors, frequencies and other attributes.

Extended SIP signaling information

PANI header information (RFC 7315, 3GPP TS 24.229) from the SIP signaling provides invaluable information on the user, access network and location even when only the Mw interface is monitored.

Why customers choose Qrystal

	Voipfuture	Other
Signaling monitoring
Call flow diagrams
Registration monitoring
Call traces/packet recording
Average MOS per call
Accurate MOS with high temporal resolution
Automatic root cause detection
Codec detection on packet level
Aggregation for trunks & numbering plans
Support for timeslice KPIs (ETSI TR 103639)
Scalability
Vendor independence

"Our team hasn't had any complaints about voice quality since we put Qrystal in"

Richard Milner

Project Manager, Vodafone UK

“It is difficult to see how anyone could launch Voice over WiFi services without a tool like Qrystal. Being able to identify WiFi-related service degradation is key to our efficient operations."

Amir Haviv

Manager, Assurance and Analytics for Mobile, Partner

“Ensuring a high quality experience for consumers and carrier partners is paramount, and Voipfuture tools provide us with the rich data and insight to help deliver this for our customers.”

Clive Goodwin

Head of International Voice Services at Vodafone

“Voipfuture’s solution stood out during our assessment for voice quality monitoring and proved its value in the first month after deployment. It delivers real-time data visibility for both quality of service and quality of experience. This is essential for us to continuously improve speech quality for our customers.”

Ronen Keshet

Head of Partner Network Engineering, Partner

Next-generation KPIs for next-generation voice services

Effectively measuring the quality of VoIP services is crucial. ETSI defines proven and accurate time slicing KPIs which complement the well-known and widely used SIP signaling KPIs .

This white paper explains the fixed time slicing technology, which provides MOS and other metrics to accurately assess in-call user experience.