Converge Pro ClearOne Due Diligence findings and other matters 07/20/2005 Converge Pro Rev. 12/21/2007

Introducing Converge Pro Series - Any Conference - Any Room - Any Media Rev. 12/21/2007

Professional Conferencing product line – Converge Pro Series Large-scale audio applications Models Converge Pro 880 Converge Pro 840T Converge ProTH20 Converge Pro 8I Converge Pro 880T (NEW) Converge SR 1212 (NEW) Benefits Superior Audio ClearOne next generation algorithms Field proven technology Configuration flexibility More models Improved SR feature sets Improved ease of use Simplified programming Reduced installation times World Class customer service Tech support Field engineering Rev. 12/21/2007

Converge Pro Mixer Line- Channel Table Product Mic/Line Inputs Line Processing Channels Fader Outputs Channel Telco E-Bus Converge Pro 880 8 4 12 Yes 8I 840T 9 1 TH20 2 880T Converge SR 1212 (non AEC) Rev. 12/21/2007

Converge Pro Key Features- Connections & Communications USB (Type B) Front Panel Control Dual Port Ethernet Connection PC Port Network Port Dual Port RJ-45 Expansion Bus Connection Time Division Multiplexed Mix/Minus audio and control slots Improved speed Expanded distance to 200 feet between units RS-232 Port Up to 155.2 kbaud Cannot connect with console GPIO Ports Dual Port DB-25 Mini-Phoenix Audio channels connectors Color coded based on channel type Differential inputs/outputs Rev. 12/21/2007

Converge Pro Key Features- Signal Processing Acoustical Echo Cancellation Feature Additions Smoothing Filters to reduce artifacts Improved Adaption and Suppression routines 20Hz-22kHz full bandwidth Automated Push-to-Talk microphone mode feature AEC Freezing Microphone Threshold Pre AEC Channels Bypasses AEC processing (4msec maximum delay) Mixer feature additions Gain/Gating control tracking Cross Point Gain for channel volume control 4- Fader channels Microphone Pre-Amp Gain 7dB Sets for improved microphone gain matching Automatic Gain algorithms Automatic Level Control Automatic Gain Control Rev. 12/21/2007

Converge Pro Key Features- Signal Processing Telco feature additions Caller ID Type I & Type II ( US/EU) Noise Cancellation on receive channel ClearEffect algorithm Receive Automatic Level Control (ALC) G-Link (TH20) Call Management/Processing additions Ringer selection Robust dial tone detection scheme Improved ringer detection International impedance matching Off-Hook DTMF Generation Rev. 12/21/2007

Converge Pro Key Features- Console Programming Enhanced Views Unit View Route Indications/Table Drag & Drop A/V Devices High level audio controls Channel View Access to all signal processing Set cross point Channel object drag & drop Database Builder Create custom A/V devices or use C1 Create custom channel objects Improved preset presentation Automatically sets input row Simplified check box on all frames Rev. 12/21/2007

Converge Pro Key Features- System Diagnostics Improved Signal Generator White/Pink Noise Generator Sweep Generator Timed terminations System Checks Telco verification Microphone checks Output Checks Clip/Presence Indications Improved Metering Peak & Hold Indications Faster streaming Rev. 12/21/2007

Converge Pro Key Features- Management Timed Events Simple Network Management Protocol (SNMP) Agent ClearOne MIB with Traps & Get/Set Interface with enterprise management consoles (HP Openview) Simple Mail Transport Protocol (SMTP) Send emails to maintenance personnel on traps Embedded Web Server Remote maintenance from web pages Audio control/monitoring of channels Site wide dial & control page Site firmware updates Access from standard web browser Control API Improvements GPIO Status Command Delay Command System Checks Event/Device Logging Rev. 12/21/2007

Converge Pro Key Features- Other Convert/Compare Utility Converts XAP site files to Converge files Compare Converge files for parameter differences Firmware Updates Point to Point mode Point to Multipoint mode (Expansion Bus) Update from Web or Console Application Security Three access levels Administrator, Maintenance, End User Password verification Front Panel Control Channel Gain/Mute control Configuration Settings Preset & Macro execution Rev. 12/21/2007

Rev. 12/21/2007