1. Virtual Data Systems, Inc. Value Proposition of IP Telephony Voice over IP Technologies

2. Virtual Data Systems, Inc. Value Proposition of IP Telephony Voice Over IP Overview VoIP is an emerging technology that allows voice calls to be made over an IP network. Vendors have been pushing VoIP for a few years, but many potential customers have been waiting for “better” call quality, or believe that nothing is free. If applied and configured correctly, a VoIP solution can provide excellent call quality, and tremendous financial savings to both large and small organizations. The Key to implementing a successful VoIP solution is to Identify opportunities that fit.

3. Virtual Data Systems, Inc. Value Proposition of IP Telephony Do Companies Want VoIP? 76% Will! Source: Network World 500/ Progressive Strategies 08/11/1998, p. 36 Network World asked 500 readers to assess whether they would consider using voice over IP:

4. Virtual Data Systems, Inc. Value Proposition of IP Telephony Key Business Drivers for LAN-Based Telephony and VoIP 81% 59% 38% 26% 050100 Save Money Better Utilization of Bandwidth Support Multimedia Improve Network Management Source: Survey by Yankee Group Survey, 10/98

5. Virtual Data Systems, Inc. Value Proposition of IP Telephony Identifying VoIP Solutions Customer Specific Questions - Does the customer make long distance calls between offices ? Does the customer have a large, at-home workforce? Has the customer already made an existing investment in WAN infrastructure which could be leveraged for a VoIP solution? Is the customer looking to set-up a call center? Is the customer looking to scale-down communications support costs? Project Specific Questions – Is there enough bandwidth? (if no, how much more is needed?) Does customer already have required network infrastructure? What is the ROI on the VoIP project? VoIP is a simple concept to sell, but answer these questions before hand to determine if the application fits

6. Virtual Data Systems, Inc. Value Proposition of IP Telephony How does VoIP Work? 1.Compression – voice is compressed typically with one of the following codecs, G7.11 64k, G7.29AB 8k, G723.1 6.3k These steps happen in reverse at the other end 2. Encapsulation – the digitized voice is wrapped in an IP packet 3. Routing – the voice packet is routed thru the network to its final destination The 1-2-3s of VoIP

7. Virtual Data Systems, Inc. Value Proposition of IP Telephony Types of VoIP Technologies 1.IP LAN Telephony or IP PBXs By design, an IP based telephone PBX system Telephones are IP handsets and codecs in one PBX chassis performs call routing and traditional telephony functions Voce travels over Ethernet computer LAN TOP Manufacturers include: Cisco and 3COM / NBX 2. VoIP Gateways Devices which allow the bridging of legacy PBX systems and/or analog telephones over IP networks. TOP Manufacturers include: Cisco, 3COM, and Ericsson

8. Virtual Data Systems, Inc. Value Proposition of IP Telephony IP LAN Telephony or IP PBXs NBX Chassis NBX Business Telephone Full-featured Ethernet-based telephone NBX Call Processor (NCP) card NBX Analog or Digital Line Card NBX 10BASE-T Hub Card NBX Open Platform allows for the use of industry-standard network hubs & switches to connect additional telephone sets

9. Virtual Data Systems, Inc. Value Proposition of IP Telephony Can be Switched 10 Mbps IP PBX Architecture *NBX 100 is Independent of the Network File Server *NBX 100 System stays up even when the file server goes down. Network File Server Hub or switch, 10/100 CAT-5 Ethernet

10. Virtual Data Systems, Inc. Value Proposition of IP Telephony Sample Application PSTN Router Layer 2 Switch PBX Main Office SO / HO HUB IP Router or ISDN, DSL LAN Modem IP Network

11. Virtual Data Systems, Inc. Value Proposition of IP Telephony Sample Application IP Network Small Office 1 IP Router Hub or Switch NBX 100 Small Office 2 IP Router NBX 100 PSTN Hub or Switch

12. Virtual Data Systems, Inc. Value Proposition of IP Telephony VoIP Gateways Allows the bridging of IP and circuit switched telephony devices Primary Uses of VoIP Gateways Toll By-Pass, #1 Integration of heterogeneous PBX environments over WAN IP Gateway for Mobility Telecommuters, SOHO TOP Manufacturer VoIP Options Cisco, VoIP Card for 2600 series (and up) routers Manufacturer Specific Gateways, (Nortel, Lucent, Siemens, etc.) Ericsson WebSwitch (WebSwitch 100 and 2000) Ericsson offers most overall flexibility and customer value

13. Virtual Data Systems, Inc. Value Proposition of IP Telephony How VoIP Works LAN BLAN A GWrouterGWrouter PBX APBX B EXT 101 EXT 201 IP Network EXT 101 places a call to ext 201. PBX A sees ext 201 as the gateway and sends the call out to the GW. The GW compresses the voice and encapsulates it in an IP packet and sends it to the destination of the other GW. The GW on LAN B must strip out the IP, decompress the voice and route it to PBX B.

14. Virtual Data Systems, Inc. Value Proposition of IP Telephony VoIP Application PBX Digital Handsets PBX Branch Office #2, TX Digital Handsets Branch Office #1, FL Digital Handsets PBX Main Office, CA FR Network Frame Relay Connection Ericsson Webswitch 2000 Allows Toll By-Pass via FR Network Local dial tone at remote office 3 digit extension dialing between offices

15. Virtual Data Systems, Inc. Value Proposition of IP Telephony VoIP Application Analog Phone Analog FAX WS 100 Analog Phone Analog FAX WS 100 Digital Handsets PBX Main Office, CA T1 Internet connection PC Telecommuter PC Telecommuter DSLCable connection Internet Webswitch 2000 Toll By-Pass via Internet Analog phones appear as extensions on WS200

16. Virtual Data Systems, Inc. Value Proposition of IP Telephony Issues Associated with proper VoIP Implementation Assess current user requirements and future needs (video ?) Assess corporate LAN / WAN infrastructure and determine required upgrades or modifications, if required Modify security systems for VoIP (firewalls) Implement correct Quality of Service and data prioritization (latency problems) Create and maintain master IP addressing to EXT schema Proactive monitoring of available network bandwidth and utilization rates

17. Virtual Data Systems, Inc. Value Proposition of IP Telephony Converged Networking from Virtual Data Systems VDS has over 5 years of experience designing and implementing converged networks supporting voice, video and data services Only VDS can provide proven best of breed technologies: Cisco Premier Partner 3COM Voice Solutions Partner Ericsson-Webcom Solutions Partner Polycom Solutions Provider (IP video systems) VDS can provide turnkey solutions including: system design, specification, equipment supply, installation, configuration and user support services Local and available to help YOU make the SALE!

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