Joe Davis Vice-president Professional Services June 19, 2006 IP Telephony aka Voice over IP (VOIP) Joe Davis Vice-president Professional Services June 19, 2006

Discussion Topics A look back in time A few facts Preparing your Network for Next Generation Telecommunications What you SHOULD expect from a Next Generation Telecommunications Solution Customer Case Study Today you will experience next-generation enterprise telecommunications

VOIP has a similar history A little history Stone Tablet Parchment Typewriter Software Printing Press Cave Wall Word Processor Present A long time ago VOIP has a similar history

A few facts* Sales of enterprise IP telephony systems increased more than 25 percent year over year in 2005 By comparison, the sale of conventional PBX systems decreased by 33 percent U.S. business spent $2.88 billion for both TDM and IP-based telephony systems last year 62 percent was spent on IP voice systems In a recent Network Computing poll, 59 percent of respondents have an IP PBX in production or will within 12 months *Network Computing June 8, 2006

Preparing your Network for Next Generation Telecommunications

Environment Cabling Firewall Routing Switching QoS Bandwidth PoE Network Services WAN

Switching Is the switching fabric adequate to properly support VoIP? Non-blocking Switching Fabric Max Latency of 150 ms Packet Loss < .1% Jitter < 10 ms NO Hubs (Shared Media Devices) or Unmanaged Switches Forwards Packets at Line Rate Common Prioritization Scheme Supported Across all Switches IGMP Support Switches, IP Phone Endpoints and Media Gateways Should Support Auto Negotiate

QoS What method of packet prioritization is currently implemented, can be implemented based on installed hardware and will be implemented to prioritize voice? Layer 2 – Forwards Traffic Based on MAC Addresses 802.1 p/Q Frame Tagging Layer 3 – Forwards Traffic Based on IP Addresses IPv4 Support 2 Methods TOS Differentiated Services Layer 4+ - Proprietary for Each Switch Manufacturer Example: UDP/TCP Port Traffic Prioritization VLAN – Logical Separation of Traffic on Virtual LANs Configured per Switch Port or Tagged

Bandwidth Considerations Is there adequate bandwidth to support the desired amount of voice paths? Compression G711 (Uncompressed at 90 Kb) G729 (Compressed to 30 Kb) Plan WAN Connections to Accommodate the Desired Amount of Voice Paths Plan Bandwidth Utilization for <100% Considering Chatty Applications Remote and Home User Bandwidth Broadband vs Dialup

Power Over Ethernet - PoE Is there hardware in place to support powered IP endpoints? IEEE Standard 802.3af Types POE Enabled Switching Hardware Know How Many IP Endpoints a Specific POE Enabled Switch Will Power Does the Switch Support an External Power Supply for Additional Power Midspan Device Local Inline Power Local Power

Wide Area Network Are there multiple sites involved and if so how is the WAN configured? Types MPLS Point to Point Internet with VPN Public Internet Prioritization Support Multicast Support Latency, Jitter and Packet Loss Considerations PSTN Failover Island Survivability

Trunks Analog vs Digital (PRI) Know what you are getting from your service provider!

What is VoIP? IP PBX?

What is VoIP? IP PBX? IP Distributed Software Architecture—IP Communications Standards-Based Distributed Software Approach Does More, Costs Less Gives you more control with less risk Saves Time and Increases productivity through expanded applications Simplifies your communications IP Centrex Solution – Service Hosted Solution Examples are Covad, AT&T Works similar to Centrex Costs More Limited Control, Features and Benefits IP Enabled – IP Enabling your PBX Enables you to connect all of your locations across your network Limited additional features or benefits VoIP – Voice in Data Packets Typically using the public Internet with little to no guarantees Examples are Vonage or Net2Phone Consumer based product—NOT BUSINESS QUALITY VOICE IP Enabled—IP Enabling your PBX Enables you to connect all of your locations across your network Limited additional features or benefits IP Centrex Solution—Service Hosted Solution Examples are Covad, AT&T Works similar to Centrex Costs More Limited Control, Features and Benefits IP Distributed Software Architecture—IP Communications Standards-Based Distributed Software Approach Does More, Costs Less Gives you more control with less risk Saves Time and Increases productivity through expanded applications Simplifies your communications VoIP – Voice in Data Packets Typically using the public Internet with little to no guarantees Examples are Vonage or Net2Phone Consumer based product—NOT BUSINESS QUALITY VOICE

What is VoIP? IP PBX? VoIP – Voice in Data Packets Typically using the public Internet with little to no guarantees Examples are Vonage or Net2Phone Consumer based product—NOT BUSINESS QUALITY VOICE IP Enabled—IP Enabling your PBX Enables you to connect all of your locations across your network Limited additional features or benefits IP Centrex Solution—Service Hosted Solution Examples are Covad, AT&T Works similar to Centrex Costs More Limited Control, Features and Benefits IP Distributed Software Architecture—IP Communications Standards-Based Distributed Software Approach Does More, Costs Less Gives you more control with less risk Saves Time and Increases productivity through expanded applications Simplifies your communications

Analysts say the real value of Next Generation Telecommunications is… Mobility Enhanced Communication Options Unified Communications & Messaging On-demand Conferencing Video Conferencing Convergence with Business Apps The real value of IP telephony is to enable the next-generation of enterprise telecommunications… …This is the “ideal” that everyone is striving for.

Industry Analysts say the inhibitors for Next Generation Telecomm are… Concerns about Five 9’s Reliability Core Voice Features Ensuring Security Interoperability Enterprise Scalability Overcoming Complexity These are legitimate concerns. And at the show you will be hearing about a lot of different ways to address various combinations of these challenges.

How do you overcome these inhibitors and deliver real value? But what do you really need to address all of these challenges? Let’s look at each of these in detail.

How do you overcome these inhibitors and deliver real value? Next-generation telecommunications is software on your network. But what do you really need to address all of these challenges? Let’s look at each of these in detail.

Rich Telecommunications Features Standards-based Interfaces To deliver real value, a software-based open systems architecture must offer: Rich telecommunications features to support all types of users Non-proprietary standards-based interfaces to integrate with your environment And linear, enterprise-class scalability to grow with your business Now you have the right platform for an enterprise telecommunications system. Rich Telecommunications Features Standards-based Interfaces Enterprise-Class Scalability

Next generation telecommunications is about flexibility and choice for your business needs. But what do you really need to address all of these challenges? Let’s look at each of these in detail.

Select from a wide array of communications devices that fit the needs of your business Flexibility and choice means you can select from a wide array of communications end points

Fully integrated voice, text messaging, desktop video, on-demand conferencing, voice mail, unified messaging, presence, and more… Flexibility and choice means you can select from a wide array of communications end points

Pay As You Grow - makes it easier to adapt to changing business conditions. 20,000+Users Small Office / Branch Office True Linear Scalability Multi-Site Enterprise Scale With a simplified approach, planning for growth just got a lot easier. Our pay as you grow pricing model, and true linear scalability, means that you can grow from the smallest deployments to the largest with a clear understanding of what it will take to get there.

Users easily control how they communicate, from any location, through one integrated application! With a simplified approach, Your end users get the power to easily control their communications, because it’s all available through one integrated application.

A Peek into the not so Distant Future (Like Tomorrow)

SIP Trunking A key element that enables an all-IP, all-software communications infrastructure and delivers on the vision of enhanced business communications

SIP Trunking Enabling the All-IP communications opportunity between enterprises and carriers Carrier Media Gateway SIP Trunk Signaling Enterprise Network Carrier Network PSTN Enterprise Softswitch IP Infrastructure All-IP

Web Services for Enterprise Communications By integrating a suite of web services VoIP can make communications an integral component of an enterprises Service Oriented Architectures (SOA) initiatives.

Enterprise Softswitch in a SOA CRM Supply Chain Web Collaboration Human Resources Contact Center Applications SOAP/XML Services IP PSTN Carrier Network IP Internet Communications become part of a business applications suite SOA framework is primary driver in enterprise Standards provide medium for communication among applications Remote Sites Supplier Environments Remote Users