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The NetSensory Solution Insight for VoIP delivers real-time, integrated management of both voice and data applications from an easily-installed appliance, without the need for agents, probes, or synthetic handsets. You can drill down from industry-standard voice quality metrics to the underlying network conditions responsible for call degradation, measure the impact of other enterprise applications on voice traffic, and judge how other applications are affected by the network changes made to support voice.
Manage Voice Like Any Other Application
The whole point of deploying VoIP is to run voice across the network just like any other application. But voice and network managers are finding that their management tools aren’t up to the task. Call management solutions offer no insight into the network cause of call degradation, while traditional network management tools can’t accurately monitor voice user experience. And neither can effectively show the impact of network conditions and standard application traffic on VoIP traffic, or vice versa. As a result, managing a VoIP implementation is a guessing game, with network managers on the losing side: they can’t prove it’s not the network, or if it is, they can’t see how best to fix it.
The NetSensory Solution Insight for VoIP overcomes these problems by integrating standard voice quality metrics with the more than 60 performance and utilization metrics delivered by Network Physics NetSensory appliances. The resulting point-and-click interface enables you to manage voice much like any other application on your network. You can easily drill down from call details to identify the underlying causes of call degradation or failure, whether caused by network performance issues such as latency, packet loss, and jitter, or by competing traffic from other applications. As well, you can judge the impact of the network changes that you make to support voice (e.g., QoS) on other, critical applications. And all this data is available for calls in progress as well as completed calls.
The NetSensory Solution Insight for VoIP gives you integrated, real-time, point-and-click access to call quality metrics in the context of overall network performance.
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Real-Time Business Impact
The NetSensory Solution Insight for VoIP delivers both real-time and historical data about VoIP performance. It correlates call signaling and media in real time, allowing you to clearly identify the cause of failed calls, as well as the quality of both ongoing and completed calls, on all active channels (e.g., calling and listening). NetSensory can even monitor the quality of encrypted calls, if the headers are transmitted in the clear.
Like all Network Physics performance management solutions, the NetSensory Solution Insight for VoIP presents all metrics in the context of their business impact: who is affected and what’s the importance to your bottom line. You can monitor the quality of individual calls (identified by phone number, IP address, or other parameters), or of groups of calls aggregated by the business identity of their origin or destination (e.g., department, remote office, customer site, etc.). At any point you can drill down from voice metrics, such as individual or aggregated MOS ratings or R-factors, to the underlying network issues impacting call quality. NetSensory even computes and displays real-time information on the relative contribution of various factors (e.g., jitter, latency, dropped packets) to overall call quality.
The NetSensory Solution Insight for VoIP delivers in-depth insight into the network factors controlling call quality.
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Easy Deployment, Simple Management
TThe NetSensory Solution Insight for VoIP is a software option for standard NetSensory appliances, so it requires no hard-to-manage agents or synthetic handsets, no SNMP or probes: just a simple SPAN/mirror port or tap at a key point in your network where call data is available. This is often a single point, but the solution can easily scale to larger, distributed implementations. NetSensory gathers data from real traffic, and also automatically reads RTCP XR call management traffic if available. In many cases, the Insight can run in the same appliance you use to manage your data applications.
The NetSensory Solution Insight for VoIP is a software option for standard NetSensory appliances, which install via SPAN/mirror port or tap at a data aggregation point—no probes, agents, SNMP, or synthetic handsets needed.
The NetSensory Solution Insight for VoIP gives you the data you need for a wide range of tasks: pre-deployment baselines of your network to judge its readiness for VoIP, VoIP testing, troubleshooting and diagnostics, voice quality assessment (listening, conversational, and transmission), billing and accounting, and verifying service level agreements. And, your authorized Network Physics solution provider can customize the NetSensory Solution Insight for VoIP to fit your specific needs, including integration of data from other products: for instance, caller name from a call manager.
The NetSensory Solution Insight for VoIP breaks down call setup to reveal the cause of call failures.
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NetSensory VoIP Metrics
| Call Quality Metrics |
- Listening, conversational and transmission quality MOS ratings with ACR
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| Call Setup Diagnostics (Call Setup Ladder) |
- SIP, Cisco SCCP (Skinny), H.323
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| ITU and TTC scaling – MOS-LQ, MOS-CQ |
- Listening and conversational quality R factors (R-LQ, R-CQ)
- Separate R factors for burst and gap conditions (R-Burst, R-Gap)
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| IP/RTP Metrics |
- Packet loss rate, packet discard rate, burst length/density, gap length/density, IP TOS byte
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| Jitter Buffer Metrics |
- Early packets, late packets, discards, resynchronization events, jitter buffer delay, jitter envelope, etc
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| Degradation Factors |
- Percentage contribution of loss, jitter, codec, delay, signal level, noise level, echo, and latency to call degradation
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| Interface Protocol Compatibility |
- UDP, RTP (RFC3550), RTCP XR (RFC3611)
- Spans VLAN encapsulated traffic
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Key Benefits
- Manage voice and data applications together in real time
- Delivers industry-standard voice metrics plus all NetSensory data metrics
- Drill down from voice quality to underlying network causes of call degradation
- Monitor impact of data traffic on voice and vice versa
- Defend against “the network is slow”
- End service provider vs. VoIP vendor finger-pointing
- Simplify VoIP management
- “Single-arm” deployment via appliance
- Simple SPAN/mirror port or tap connection
- No agents or synthetic calls, monitors real user experience
- For most implementations, runs in same appliance
- Fast time to value
- Monitor signaling and media, multiple channels
- Get real-time information on call quality
- Call setup, calls in progress, and completed calls (history)
- Inbound and outbound (talk and listen)
- Monitor quality of encrypted calls (if headers in clear)
- Get insight into service provider performance and VoIP service levels
- Baseline network before and after VoIP rollout
- Easy comparison of VoIP performance before and after network changes
- Easily communicate benefits of VoIP and network initiatives to non-technical managers
- Integrate third-party data (e.g., from call managers)
- Extensible architecture for highly distributed environments
- Manage VoIP for maximum return on investment
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