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SurfInsight™

Expert Decoding & Analysis System

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Contents

Networks: Evolution and Challenges

SurfInsight Overview

SurfInsight Features

Summary

About Surf

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Networks: Evolution and Challenges

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Networks: Evolution

Today: Different networks for different purposes

TDM

Wireline IP

Wireless IP

2G; 2.5G; 2.75G Mobile (conversational multimedia is TDM)

3G IMS eventually will be IP

Future: Networks will be all IP, BUT…

Different vocoders

QoS issues

Mobility issues (mobile IP and roaming)

Billing issues

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New Networks, New Challenges Supporting new standards

(interoperability effort) Data coding

T.38 for Fax V.150 for Modem More…

Voice coding G.7xx G.168 Echo canceller AMR

Quality measurement & assurance P.862 P.561

Packet coding RFC335x RFC2833 More…

Meeting new network conditions

Ethernet conditions Delay Jitter Packet Loss

Echo cancellation due to long delay

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SurfInsight Overview

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SurfInsight Overview

Device-independent communications analysis

Enables decoding and analysis of the following transmissions:

Data (Modem)

Fax

Mobile Fax

Mobile Data

VoIP

Over the following networks:

PSTN

A-interface

IP

Zero integration effort

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Who Benefits from SurfInsight? Equipment Developers

Media Gateways

CTI Applications Messaging IVR Recording

Fax Servers

RAS Servers

Service Providers

Carriers & Operators

ISP (VoIP)

WISP (VoIP)

Mobile Operators & Service Providers

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Solution for Equipment Developers

Provides bottom-up deep diagnosis of the call

e.g. (fax): provide info from data pump layer up to tiff picture

Helps solve interoperability issues

Diagnoses physical layer problems

Diagnoses network layer problems

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Solution for Service Providers

Non-intrusive IP network diagnosis

High packet loss rate

High jitter

Non-intrusive TDM network diagnosis

Echo path

Echo canceller performance

Indicates possible location of problems

TDM

IP

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SurfInsight Features

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SurfInsight Features

Decoding and analysis are performed without any interference to transmission

Offline analysis of TDM & IP captured files

Non-intrusive quality measurement for voice

Real-Time analysis (future)

High-level “insights”, based on Surf expertise and field-hardened experience

SurfInsight has a user-friendly GUI, Windows-based solution

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Real-time

SurfInsight Workflow

PCM files Output: Content, Events & Signaling

E1/T1

Ethernet

Problem indicators,analyzers:“What caused the problem?”

MoIP (VBD)FoIP (VBD)Voice

Mobile Data

Analyzers:Modem FaxFoIP (T.38)A-interface:(mobile)

IP Capture

Files

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SurfInsight — Fax example

Samples from TDM channel

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SurfInsight — Output

Textual Decoding

PDSNR* Analysis

Extracted TIFFs

CallTimeline

* Post detection signal-to-noise ratio

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Modem Issues…Resolved

Data loss

Throughput

Error correction and data compression incompatibility

Interoperability in the data-pump layer

Network delay problems

Analog related problems

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Fax Issues…Resolved

Data pump incompatibility

T.30 and T4/T6 incompatibility

Network delay and timeout

Analog signal

Signal handling

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Mobile Fax/Data Issues…Resolved

GSM 03.45 incompatibility

T30 and T4/T6 incompatibility

Network delay and timeout issues

Modified V.110, A-Trau, A-Trau prime, and RLP issues

Handover issues

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MoIP/FoIP Issues…Resolved

Modem and Fax over IP related problems

Packet loss indication & handling

Jitter and Delay Transparent mode (G.711) ITU-T standards T.38 / V.150

SID indication

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Voice Issues…Resolved Network diagnosis

Jitter analysis

Packet loss

Automatic payload recognition for supported vocoders

RTP analysis

RFC2833 parameters

Payload violations

Silence descriptors analysis

Echo cancellation analysis*

Echo path

Echo canceller performance

VAD efficiency analysis*

Vocoder statistics (waveform coders, AMR and more)

* Valid only if both TDM & IP recordings exist

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Analyzing Modem Over PSTN

Decoded Data

(PPPD format)Input Signals

DataPumps

Error Correction&

Data Compression

SignalAnalyzers

Data Pump State Machine

Analyzers

Error CorrectionData Compression

Analyzers

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Modem Analysis Information

Signal Analyzers

Input signal stability / overflow

Discriminator information

Data Pump State Machine Analyzers

Demodulation

Detailed phase information exchange

Improper state flow and timeouts

Error Correction / Data Compression Analyzers

Negotiation exchange information

Improper state flow analysis

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Analyzing Fax (T.30) Over PSTN

Input SignalsData

PumpsT.30 Decoder

SignalAnalyzers

Data Pump State Machine

Analyzers

State MachineAnalyzers

PictureAnalyzers

Tiff Decoder

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Fax Analysis Information

Signal Analyzers

Signal quality

Discriminator information

Data Pump State Machine Analyzers

Demodulation quality

Detailed phase information exchange

T.30 Decoder Analyzers

T4/T6 compression information and incompatibility

Improper state flow analysis

ECM problems

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Analyzing T.38 Fax Over IP

T.38 Decoder

T.30 Decoder

T.38 packetsAnalyzer

State Machine

Analyzers

PictureAnalyzers

Tiff Decoder

IP Parser UDP/Port Selection

Stream Content

Recognition

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T.38 Analysis Information

Packet Analyzers

Packet loss detection

Jitter behavior

No-signal/single-sided indication

Bad packets detection

Packet collusion detection

T.30 Decoder Analyzers

T4/T6 compression information and incompatibility

Improper state flow analysis

ECM problems

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Analyzing Voice Over IP

RTP Decode & Jitter Buffer

Vocoders,PLC/CNG

Payload & Jitter

Analysis,RFC2833 parameters

SID & Packet loss

Analysis,WaveformAnalysis

Non-intrusiveVoice

Quality

TDM Samples

IP Parser UDP/Port Selection

Stream Content

Recognition

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TDM/IP Cross Analysis (expert system)

Decode samples from IP capture

Input SignalsData

PumpsT.30 Decoder

SignalAnalyzers

Data Pump State Machine

Analyzers

State MachineAnalyzers

PictureAnalyzers

Tiff Decoder

Analyze the samples using the Fax analysis

CrossCrossAnalysisAnalysis

RTP Decode & Jitter Buffer

Vocoders,PLC/CNG

Payload & JitterAnalysis,RFC2833 parameters

SID & Packet lossAnalysis,WaveformAnalysis

Non-intrusiveVoice

Quality

TDM Samples

IP ParserUDP/Port Selection

Stream Content

Recognition

TDM samples

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Summary

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SurfInsight Summary

Accelerate development cycle of Data and Fax-related systems

Simplify interoperability resolution

Simplify and accelerate maintenance at customer sites

Transparently produce diagnostics and “insights”

Result: Faster “Time-to-Market” !

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Thank You

www.surf-com.com