yes, but it’s only the subplot! is voip the future of telecommunications?
Post on 19-Dec-2015
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TRANSCRIPT
Conclusions
• Voice over IP (VoIP) is the strategic direction for both the wide area network (WAN) and premise PBX equipment.
• VoIP is rapidly becoming a viable technology for some implementations.
• The biggest reason for using VoIP in the WAN today is cost savings.
• Full and complete telephony application functionality will not arrive until 2003.
Technology Conclusions
• New technologies are becoming available that leverage the universal deployment of TCP-IP within the LAN, WAN, and Metropolitan Area Network (MAN)
• Passive Optical Networking (PON) dramatically lowers the cost of deploying broadband municipal fiber networks.
• Free Space Optics (FSO) will dramatically lower the cost of deploying broadband municipal wireless networks.
• The TCP-IP protocol represents the strategic direction for both the Local Area Network (LAN) and the Wide-Area Network (WAN)
• Voice over IP (VoIP) represents the strategic direction for both the wide-area network (WAN) and premise PBX equipment.
• VoIP is rapidly becoming a viable technology for some implementations.
• The biggest reason for using VoIP in the WAN today is cost savings.
• Full and complete telephony application functionality will not arrive until 2003.
What Is VoIP?
VoIP = Voice over the Internet Protocol
It is not:Voice over the Internet•Instead of using traditional circuit switch systems for voice communications, VoIP uses a packet protocol originally designed for data communications.•VoIP can be used within the LAN, WAN, MAN, and/or the PBX
Enterprise VoIP Economics
PBX
PBX
Intranet
IP Gateway
LocalPSTN
LocalPSTN
VoIP RequirementsRouter upgrades • shorter packet • VoIP processingRouter cardsGatewaysPBX upgradesPBX table changesIncrease bandwidthStaffing requirements
The IP Telephony Solution
Router
IP BusinessPhone
Switch
WAN
PSTN
•Call Control•Gateway•Applications
PC Phone Client
Fax
Video
H.323ConneXtions
Analog 2500 Phone Palm Pilot
Contact Center
InternetUnified
Messaging
Collaboration
Applications — A Field of Dreams
Remote Workers
[email protected] Johan,It’s over.
VoIP Hype Cycle
VoIP
TechnologyTrigger
Slope ofEnlightenment
Trough of Disillusionment
Plateau ofProductivity
Peak of InflatedExpectations
Hype
Maturity
Type A Adoption
Type B Adoption
Type C Adoption
Is Reliability Really a Problem?
WAN
Is Microsoft NT as stable as a
proprietary operating system?
Why shouldn’t the data network be resilient
enough for voice needs?
Will management riskreduced service levels
for telephony?
VoIP Perceptions: No Hardware
Server-based hardware is not necessarily cheaper than proprietary hardware
IP phones cost as much or more than the existing feature
set
Adding IP devices is not any easier than upgrading
legacy hardware
Extending the Voice Network
• Retain resilience in head-office network• Extend core functionality to all locations• Experiment with unified desktop functionality• Benefit from an upgraded network infrastructure
IP-BasedNetwork
Small Office/BranchOffice Locations
Home Workers
QSig
government PrivateVoice Network
CentralizedOperator
Voice Mail
Improving Staff Mobility
• Maintain single user profile across the enterprise
• Unify user messaging through one application interface
• Work smarter, not harder
IP-BasedNetwork
Voice ApplicationServers
WWW
In the Office
Working at Home
On the Road
Centralize Management Control
• No disparate branch-office platforms• Central control of telephone calls/routing• Single interface for moves and changes• Seamless functionality across the network
IP-BasedNetwork
Branch Offices
PSTN
ManagementInterface
IP PBX Timing
0
12.5
25
50
75
100
1999
Year
Percentage
Less than 3,000 systems in 2004
2000 2001 2002 2003 2004 2005 2006
Approximately 308,000
systems in 2004
IP/PBX for lessthan 100 desktops
IP/PBX for more than 100 desktops
Converged V/D Telephony Equipment Providers — North
American MQ
Completeness of VisionVisionariesNiche Players
Challengers Leaders
Siemens
Nortel Networks
Mitel
Cisco SystemsAvayaAbility to
Execute
3ComShoreline
NECAlcatel
As of 1/31/01
More than 100 lines
Completeness of VisionVisionariesNiche Players
Challengers Leaders
Vertical Networks Nortel Networks
Mitel
Cisco Systems
3Com
Avaya
Ability toExecute Siemens
Expanets
Shoreline
NECArtisoft
AltiGenCommunications
As of 1/31/01
Less than 100 lines
Recommendations
Where to Deploy VoIP Where Not to Deploy VoIP
All new data WAN upgrades
Remote dial-in users
Hoteling workers in multiple locations
As part of unified messaging
At new SOHO sites
When less than 100 stations
When justifying based only on TCO
With existing multiple PBX vendors
When an application doesn’t require it!
Implement now
Implement as trial first
Don’t implement for the next 18 to 24 months
Packet access networks dramatically lowers costs
Add Drop ATM and/or SONET Multiplexers provide QoS via expensive “nailed down” bandwidth between locations
ATM and SONET interfaces are also very expensive
Ethernet switches provide QoS via inexpensive TCP-IP protocols
Ethernet interfaces are also very inexpensive
Cost Comparison between OC-192 and Gigabit Ethernet
The costs for Ethernet are often 1/10 of the cost for equivalent ATM or SONET bandwidth
FSAN Model for PON
The Full Service Access Network standards initiative defines a set of passive-optical-network architecture standards using ATM as the transport technology.
Free Space Optics
Advantages
•Quick time of deployment
•Cost-efficient network investment
•No license acquisitions
•Investment protection for leased buildings
•Excellent for temporary installations