1. Voice over Internet Protocol for Small & Medium Sized Companies
VoIP for SMBs
Voice over Internet Protocol for Small & Medium Sized Companies
Scott Lee – Cisco Systems – April 2005 Ph: M:

2. VoIP Overview What is VoIP/Internet Voice?
Implementation & Equipment Options
Residential
Business
Business Drivers
Who Offers Service
Questions and Answers

3. What is VoIP/Internet Voice?
VoIP converts the voice signal from your telephone into a digital signal
VoIP allows you to make telephone calls over a data network like the Internet or Company Private Network
Calls that travel over the internet can convert back at the other end so you can speak to anyone with a regular phone number
When placing a VoIP call using a phone with an adapter, you'll hear a dial tone and dial just as you always have.
VoIP may also allow you to make a call directly from a computer using a conventional telephone or a microphone

4. Original VoIP Example = Softphone Call Direction IP Protocol
Public Internet
Soundcard
Soundcard
VoIP
VoIP
Router
Router
Call Direction
IP Protocol
Example = Softphone

5. Voice over Internet to Phone
Using VoIP Gateway Service
New York, NY
Public Internet
Miami, FL
PSTN
VoIP
Router
Server/Gateway Miami
Call Direction
IP Protocol
Example = Net2Phone

6. Voice over Internet to Phone
Using VoIP Service and ATA
New York, NY
Public Internet
Miami, FL
PSTN
ATA
VoIP
Router
Server/Gateway Miami
Call Direction
IP Protocol
Example = Vonage

7. Traditional Voice Call Voice Over IP - VoIP
Business
Traditional Voice Call
Voice Over IP - VoIP
Customer
Long
Distance
Carrier
Local
Service
Provider
PBX
Local
Service
Provider
Business
VoIP Service Provider
ATA
The
Internet
Router
Example = ATT CallVantage

8. VoIP Solution Sets: Toll Bypass and IP Telephony8
PBX
PBX
IP WAN
Router/GW
Router/GW
Toll Bypass
IP Telephony
Call Control
Cluster
IP WAN
Router/GW
Router/GW
End-to-End IP Telephony with Application Enablement

9. IP Telephony
P S T N
Router
PBX
INTERNET
LAN

10. IP Centrex
Legend
Ordinary analog telephone sets and fax machines may be served through a Customer Gateway. On behalf of the analog devices, the Customer Gateway performs voice digitization and packetization. It also converts analog signaling into IP telephony messages.
The Customer Gateway has an Ethernet interface for connecting to the LAN. It also provides jacks to connect analog devices (telephones, fax machines) and/or ISDN telephone sets. The Customer Gateway sends IP telephony messages across the LAN, over the broadband access facility, and through the managed backbone network to the Softswitch. The Softswitch provides the customer gateway with the IP address of the other party. The Customer Gateway uses this information to send packetized voice streams directly to the destination. The destination may be another Customer Gateway or IP Phone on the same LAN, a Customer Gateway or IP Phone on a different LAN across the backbone network, or the Trunk Gateway (for parties served by traditional lines on the PSTN).
The IP Phone combines the customer gateway functionality and telephone set functionality into one device. The IP Phone has an Ethernet interface to the LAN. The IP Phone sends IP telephony messages across the LAN, over the broadband access facility, and through the managed backbone network to the Softswitch. The Softswitch provides the IP Phone with the IP address of the other party. The IP Phone uses this information to send packetized voice streams directly to the destination. The destination may be another IP Phone or Customer Gateway on the same LAN, an IP Phone or Customer Gateway on a different LAN across the backbone network, or the Trunk Gateway (for parties served by traditional lines on the PSTN).
The Softswitch provides the call control and service logic for the IP Centrex service. The Softswitch exchanges IP Telephony messages with Customer Gateways, IP Phones, Signaling Gateways, Trunk Gateways, and other Softswitches.
When a call must pass between the backbone packet network and the PSTN (e.g., an IP Centrex customer calls a traditional analog customer), the Softswitch uses the Signaling Gateway to exchange SS7 messages with PSTN Class 4 and Class 5 switches through Signal Transfer Points.
When a call must pass between the backbone packet network and the PSTN (e.g., an IP Centrex customer calls a traditional analog customer), the Softswitch directs the call to a Trunk Gateway. The Trunk Gateway packetizes/depacketizes the voice stream so that it can be transmitted over a DS1 trunk to PSTN Class 4 and Class 5 switches.

11. Why VoIP ? Save or Eliminate Long Distance Charges on voice calls
Converge and integrate company networks
- Integrate where and when needed
- Voice, Video & Data over an IP network
- Reduce the costs of managing parallel networks
- Reduce the costs of moves and changes (LAN Telephony)
Centralize or distribute data/voice architectures
- Add features where they are needed
Migrate to VoIP as the business grows and updates
Provide multi-vendor interoperability
Provide more features and application integration
More voice/data managed services available

12. Business VoIP Service Providers
Bandwidth.com Internet & Managed Voice+800 #s +Unlimited plan available Broadband Phone Unlimited US and Canada Calling $19.95/ month unlimited Broadvoice SIP based provider, uses ATAs or open access. DID's available Cbeyond Communications Voice and Broadband Internet provider built for SMB . Covad Small Business Hosted service to serve small to mid-size businesses. Ecuity Business VoIP for business, plus a focus on roaming and WiFI. Fonality SMB PBX systems with VOIP service. Offers LNP for toll free numbers. GalaxyVoice Regular and 800's for business. Lifetime flat rate. Offers LNP. IP Communications Corporate and Call Center Specialist for 800 and VoIP VPN Ntegrated Voice Unlimited long distance for USA and Canada Palavon - Hosted IP PBX / CRM . Toll Free numbers w/ Custom IVR. Quick Connect USA Dedicated converged voip data networks. Modified IP PBX is included Reignmaker Communications End-to-End and hosted VOIP in Atlanta, Dallas & Denver. SkyNET Telesystems Unlimited long distance for USA and Canada. No Broadband required. Personal and Vanity 800 numbers support. Super Phone Unlimited Flat rate billing, business.. Hosted or physical IP-PBX.. VocalNet, Inc. CLEC - B2B IP Convergent Voice, Data and Virtual PBX over a Private Network. VoicePulse Business SIP based service. DID's available WhistlerTel Global Broadband Phone Service provider broadband phone and calling card service SMB VOIP and IP Centrex systems

13. Considerations What benefits will VoIP provide to this corporation ?
Can we show a good ROI ?
Make use of legacy systems
Migrate to VoIP where it makes sense
What’s the right architecture ?
- Partial integration
Centralized/distributed or both
How do we ?

14. Question & Answer