1. © 2007 All rights reserved  Bandtel Confidential and Proprietary The Flavors of SIP Trunking September, 2008 Joel Maloff Senior Vice President of Sales and Marketing 954-366-0681 jmaloff@bandtel.com

2. © 2007 All rights reserved  Bandtel Confidential and Proprietary 2 Overview SIP Trunking isn’t the best product or service name ever created! –The enterprise marketplace, analysts and media are unclear. SIP Trunking is delivered in a variety of fashions by different service providers. Understanding the distinction between the various service provision models is essential for VARS and enterprises alike!

3. © 2007 All rights reserved  Bandtel Confidential and Proprietary 3 The Market Perception of SIP Trunking April 2008 Perception Audit –Industry analysts, media personnel –75% surveyed indicated that they were familiar with SIP Trunking service providers. –However, three of the top five vendors mentioned were hardware providers rather than service providers! –The top three benefits derived from SIP Trunking were: Quality of service Ease of use Reduction in costs

4. © 2007 All rights reserved  Bandtel Confidential and Proprietary 4 Defining SIP Trunking Ask five people to define SIP trunking. –You may very well get ten answers! The IETF Definition –“A SIP trunk is a virtual sip entity on a server constrained by a predefined set of polices and rules that determine how to process requests.” (J. Rosenberg, 2008, http://tools.ietf.org/id/draft-rosenberg-sipping-siptrunk-00.txt) http://tools.ietf.org/id/draft-rosenberg-sipping-siptrunk-00.txt SIP trunking, simply put, is a way for organizations to accomplish something that they already do, for less money, with equal or better quality, and with greater functionality.

5. © 2007 All rights reserved  Bandtel Confidential and Proprietary 5 The Flavors of SIP Trunking Within the service provider marketplace today, there are three flavors of SIP Trunking. –SIP Trunking via Dedicated Lines Requires a T1, DSL or PRI for service delivery Purports to deliver better quality Limited footprint to where dedicated service are available Large recurring cost due to leased lines –SIP Trunking as a Feature Provided by vendors of hosted IP PBX or other services Not normally the primary focus Competitive with VARS or legacy systems.

6. © 2007 All rights reserved  Bandtel Confidential and Proprietary 6 The Flavors of SIP Trunking Pure SIP Trunking –The provision of SIP trunks as a primary service –Not limited in footprint due to geographic restrictions –Does not compete with VAR offerings or legacy premises equipment –Can be designed to mirror the quality and performance of tradition telephony service delivery

7. © 2007 All rights reserved  Bandtel Confidential and Proprietary BandTel N-Plus™Network Diagram

8. © 2007 All rights reserved  Bandtel Confidential and Proprietary Summary SIP Trunking may not be the best service name ever created, but it does provide substantial value to distribution partners and to enterprises. Understanding the various types of SIP Trunking providers will allow you to make informed, effective choices. BandTel is a leading provider of Pure SIP Trunking.