VistaPlus TM AP15 Audio Processor

1. VistaPlusTM AP15 Audio Processor Enhanced Contact Center Productivity October 2008

2. VistaPlusTM AP15 • New Improved Audio Processor for Contact Centers • DSP-based with AudioIQ® technology • Key Features • Multiband compression for improved intelligibility (new) • Background noise compensation (new) • Echo canceller (new) • Incoming & outbound noise reduction • Automatic call volume leveling • Startle protection • Available now in U.S. and Canada • $150.00 MSRP

3. What is AudioIQ® technology • Multiband compression for improved intelligibility (new) • Corrects for signal loss anywhere in the bandwidth • Background noise compensation (new) • Automatically adjusts to compensate for varying levels of background noise throughout the day delivering clearer audio even in a noisy contact center • Echo canceller (new) • Outstanding echo cancellation ensures great audio even on VoIP systems • Startle protection • Reduce loud incoming noises (whistles, fax tones, etc.) • Automatic call volume leveling • All calls, no matter what the source, come in at the same user-controlled, comfortable level • Incoming noise reduction • Reduces line noise when talking • Background noise reduction • Reduces transmission of background noise when listening

4. VistaPlus AP15 • Multiband Compression • Frequency bandwidth is split into sections • 16 bands of 250Hz • Analog audio processors treat the whole signal as a single band • This DSP algorithm, part of AudioIQ, strives to deliver the optimum frequency response at all times • Mobile & cordless phones and long line lengths contribute to loss in the bandwidth, i.e. poorer audio quality received by the agent • This DSP algorithm reviews the incoming signal in its component parts & compensates each 250Hz band to deliver an overall signal that is corrected for loss anywhere in the bandwidth • Not just the level at 1kHz (traditional level compensation) • Replacement of lost frequencies clears up speech, making it crisper and clearer – thus reducing errors and repeats

5. Multiband Compression • Preferred frequency response: high quality call dB Frequency (Hz)

6. Multiband Compression • Poor frequency response: poor quality call High frequency loss Lower overall level dB Frequency (Hz) The overall signal volume (level) is reduced and the high frequencies have lost even more. Frequency loss can occur at any frequency. The loss here is shown at the high frequencies, which is most typical on sub-optimal calls.

7. Multiband Compression • Poor frequency response: poor quality call • Low volume compensation only Does not recover lost high frequency components Increase in total gain dB Frequency (Hz) The loss in volume can be compensated for by analog audio processors but no correction is made for additional lost volume at other frequencies (in this case, the higher ones).

8. Multiband Compression High frequency compensation • Poor frequency response: poor quality call • Full audio compensation Increase in total gain dB Frequency (Hz) Not only is the loss in level compensated for by the AP15 but also lost additional level at other frequencies is compensated for – making speech richer, clearer and more easily understood.

9. VistaPlus AP15 • Background Noise Compensation • Agent selects their preferred listening volume • This DSP algorithm, part of AudioIQ, uses background noise from the headset mic (there will be some even with a NC mic) and adjusts the receive level automatically to compensate for changing levels • The level of background noise inside the contact center will most likely change during the day (e.g. different numbers of agents work at any given time) • AP15 adjusts the receive level for the agent automatically • There is no need for the agent to try to compensate by making adjustments at the volume control; the algorithm does this automatically • Results in better receive sound – especially in noisy contact centers – so agents can hear better

10. Plantronics Audio Processors

11. Summary • VistaPlus AP15 • DSP-based with AudioIQ® technology • Key Features • Multiband compression for improved intelligibility (new) • Background noise compensation (new) • Echo canceller (new) • Incoming & outbound noise reduction • Automatic call volume leveling • Startle protection • Key Benefits • Greater audio accuracy to the agent, resulting in fewer errors, fewer repeats, and a less fatiguing work environment • Improves agent productivity & comfort throughout the day • Decrease in average call handling time • Reduces costs • Lower staff turnover • Improved customer satisfaction

12. VistaPlus AP15 Ordering Information Contact Comfort Telecom Canada www.comfortcanada.com • Connect with any H-series Professional Corded Headset • Accessories and Spares • USB Power Cable            • AC Power Supply • 10’Coiled Cable to QD • Stub Cable