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VoIP Applications for the Small Business. Agenda. Evolution of Communications Digital vs VoIP How VoIP works as a transport layer What is “The Cloud”? Common Applications Advantages of VoIP Misconceptions about VoIP. Evolution of Communications. Scream at your Neighbor. IP PBX.

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Presentation Transcript
agenda
Agenda
  • Evolution of Communications
  • Digital vs VoIP
  • How VoIP works as a transport layer
  • What is “The Cloud”?
  • Common Applications
  • Advantages of VoIP
  • Misconceptions about VoIP
evolution of communications
Evolution of Communications

Scream at your

Neighbor

IP PBX

Phone Guy Gets Yelled at!

2 Cans and

a String

CPE PBX using

IC Chips

Central Office

digital vs voip
Digital vs VoIP
  • Digital -Like a Subway or a Train
    • Goes Point to Point
    • Lots of people in the same car!
    • Predetermined stops
    • Not Very Flexible
  • VoIP – Like a Taxi
    • Dynamic in direction
    • Single Occupant
    • Goes to one address
    • Very Flexible
telephone systems
Telephone Systems
  • Telephones are directly connected to the system
  • Telephones - limited distance from the KSU
  • Telephones are dumb terminals
  • System Hardware controls the configuration size
  • Communications is most often proprietary
  • Use Pulse Code Modulation
  • Use Time Division Multiplexing
pulse code modulation
Pulse Code Modulation
  • Encoder
  • Time Division Multiplexing is the distance between the samples
  • Voice Conversation is transmitted in 0’s and 1’s
transport layer
Transport Layer

Ext 1401

Voice

Ext 2407

Voice

PBX 2

PBX 1

Digitized Voice

All 0’s and 1’s

Digitized Voice

All 0’s and 1’s

Transmitted Via T1/PRI

Transmitted Via T1/PRI

PSTN

T1/PRI transport

E&M Emulation

010001110101

010001110101

Ext 401

Voice

Ext 407

Voice

PBX

what is voip
What is VoIP
  • Voice over Internet Protocol is the transmission of voice over a network – Not the Internet
  • Open Systems Interconnection (OSI) Model:
    • 7 = Application – processes applications
    • 6 = Presentation – data representation and encryption
    • 5 = Session – Inter-host communications
    • 4 = Transport – End to end connections and reliability (TCP)
    • 3 = Network – Path determination and logical addressing (IP)
    • 2 = Data Line – Physical Addressing (MAC addresses & LLC)
    • 1 = Physical – Medial, signal and binary transmission
19216 west 81 st
19216 WEST 81ST

x

x

x

Address Driven

OFFICE 5

OFFICE 1

OFFICE 5

OFFICE 1

192.16 West 8.1st – Office 1

192.16 West 8.1st – Office 2

192.16 West 8.1st – Office 3

192.16 West 8.1st – Office 4

192.16 West 8.1st – Office 5

192.16 West 8.1st – Office 6

x

x

x

OFFICE 3

OFFICE 3

x

x

x

x

x

x

IP Address

192.168.1.1

192.168.1.2

192.168.1.3

192.168.1.4

192.168.1.5

192.168.1.6

OFFICE 6

OFFICE 4

OFFICE 2

OFFICE 6

OFFICE 4

OFFICE 2

x

x

x

x

x

x

Server

Room

x

x

x

x

x

x

transport layer1
Transport Layer

Ext 1401

Voice

Ext 2401

Voice

PBX 2

PBX 1

Digitized Voice

All 0’s and 1’s

Digitized Voice

All 0’s and 1’s

62.203.3.1

67.203.5.1

Gateway

Gateway

Packets addressed and

sent over the Internet

Packets addressed and

sent over the Internet

Internet transports from one

location to another using address

Internet

what is the cloud
What is the Cloud?

66.210.10.1

127.107.7.1

62.203.3.1

64.201.100.4

66.166.1.4

62.2.200.4

65.25.2.2

61.200.2.3

65.16.200.5

168.68.2.6

66.210.10.2

127.107.7.2

127.107.7.3

66.166.1.12

common applications
Common Applications
  • Remote Worker
    • Unmanaged Network – Latency and jitter
    • Bandwidth Limitations
    • Only need one static IP Address

192.168.100.1

67.28.190.127

WAN

Internet

167.19.120.111

301

302

303

common applications1
Common Applications

192.168.1.120

  • Remote Workers
  • Gateway Registration
  • WAN Port

192.168.100.1

125.105.90.201

67.28.190.127

Internet

167.19.120.111

112.47.99.98

192.168.22.199

301

302

303

common applications2
Common Applications
  • Creating a Voice Network
    • Unmanaged Network – Latency and jitter
    • Bandwidth Limitations
    • Only need one static IP Address

Internet

67.28.190.127

122.24.50.13

301

302

303

301

302

303

common applications3
Common Applications
  • Adding to the Voice Network

192.168.22.110

192.168.22.111

192.168.11.110

192.168.11.111

WAN

LAN

LAN

Internet

67.28.190.127

122.24.50.13

301

302

303

301

302

303

common applications4
Common Applications
  • Adding SIP trunks to the Voice Network

192.168.22.110

192.168.22.111

Internet

67.28.190.127

SIP Trunks

301

302

303

SIP Trunks

common applications5
Common Applications
  • Two locations

192.168.22.110

192.168.22.111

192.168.11.110

192.168.11.111

Internet

67.28.190.127

122.24.50.13

301

302

303

301

302

303

SIP Trunks

advantages to voip
Advantages to VoIP
  • Standards of Interconnectivity
  • Dynamic in Installation and Application
  • Unlimited in Size – Global Network
  • Remote workers
  • Relatively easy to create a “Voice Network”
  • Easy to do MAC Work
  • Single Cable Runs (Maybe)
  • Tree Topology
tree topology 1
Tree Topology 1

x

x

x

OFFICE 5

OFFICE 1

x

x

x

OFFICE 3

192.168.1.5

192.168.1.3

192.168.1.1

192.168.1.6

192.168.1.2

192.168.1.4

OFFICE 6

OFFICE 4

OFFICE 2

x

x

x

Server

Room

x

x

x

tree topology 2
Tree Topology 2

x

x

x

OFFICE 5

OFFICE 1

x

x

x

OFFICE 3

192.168.1.5

192.168.1.3

192.168.1.1

192.168.1.6

192.168.1.2

192.168.1.4

OFFICE 6

OFFICE 4

OFFICE 2

x

x

x

Server

Room

x

x

x

disadvantages of voip
Disadvantages of VoIP
  • Remains Expensive for the Small Business
  • Can be difficult to troubleshoot
  • Standards are still evolving
  • Quality of Voice over an Unmanaged Network
  • Lags on Call Processing Functionality
  • External Interfaces
  • Line appearances and buttons
misconceptions about voip
Misconceptions about VoIP
  • I am going to save Money!
  • No more paying long distance toll charges
  • When I use VoIP I only need one cable drop per office
  • Using Remote workers will save me money because I can use a smaller office

The Answer to all VoIP Questions is…

It Depends

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