1. 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

2. 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

3. 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

4. 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

5. Preparing your Network for Next Generation Telecommunications

6. Environment
Cabling
Firewall
Routing
Switching
QoS
Bandwidth
PoE
Network Services
WAN

7. 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

8. 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

9. 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

10. 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

11. 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

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

13. What is VoIP? IP PBX?

14. 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

15. 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

16. 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.

17. 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.

18. 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.

19. 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.

20. 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

21. 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.

22. 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

23. 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

24. 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.

25. 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.

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

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

28. 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

29. 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.

30. 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