Transcript Power Point

Voice over IP Technologies
Virtual Data Systems, Inc.
Value Proposition of IP Telephony
Voice Over IP Overview
VoIP is an emerging technology that allows voice calls to be made over an IP
network. Vendors have been pushing VoIP for a few years, but many potential
customers have been waiting for “better” call quality, or believe that nothing is free.
If applied and configured correctly, a VoIP solution can provide excellent call
quality, and tremendous financial savings to both large and small organizations.
The Key to implementing a successful VoIP solution is to
Identify opportunities that fit.
Virtual Data Systems, Inc.
Value Proposition of IP Telephony
Do Companies Want VoIP?
Not at all
likely
Not very
likely
Unsure
4%
Extremely
likely
16%
4%
76% Will!
16%
Very likely
32%
Likely
28%
Network World asked 500 readers to assess
whether they would consider using voice over IP:
Source: Network World 500/ Progressive
Strategies 08/11/1998, p. 36
Virtual Data Systems, Inc.
Value Proposition of IP Telephony
Key Business Drivers for LAN-Based Telephony and VoIP
26%
Improve Network Management
38%
Support Multimedia
59%
Better Utilization of Bandwidth
81%
Save Money
0
Source: Survey by Yankee Group Survey, 10/98
Virtual Data Systems, Inc.
Value Proposition of IP Telephony
50
100
Identifying VoIP Solutions
Customer Specific Questions • Does the customer make long distance calls between offices ?
• Does the customer have a large, at-home workforce?
• Has the customer already made an existing investment in WAN
infrastructure which could be leveraged for a VoIP solution?
• Is the customer looking to set-up a call center?
• Is the customer looking to scale-down communications support costs?
Project Specific Questions –
• Is there enough bandwidth? (if no, how much more is needed?)
• Does customer already have required network infrastructure?
• What is the ROI on the VoIP project?
VoIP is a simple concept to sell, but answer these questions
before hand to determine if the application fits
Virtual Data Systems, Inc.
Value Proposition of IP Telephony
How does VoIP Work?
The 1-2-3s of VoIP
1.
Compression – voice is compressed typically with one of the following
codecs, G7.11 64k, G7.29AB 8k, G723.1 6.3k
2.
Encapsulation – the digitized voice is wrapped in an IP packet
3.
Routing – the voice packet is routed thru the network to its final destination
These steps happen in reverse at the other end
Virtual Data Systems, Inc.
Value Proposition of IP Telephony
Types of VoIP Technologies
1.
IP LAN Telephony or IP PBXs
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•
•
•
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By design, an IP based telephone PBX system
Telephones are IP handsets and codecs in one
PBX chassis performs call routing and traditional telephony functions
Voce travels over Ethernet computer LAN
TOP Manufacturers include: Cisco and 3COM / NBX
2. VoIP Gateways
•
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Devices which allow the bridging of legacy PBX systems and/or analog
telephones over IP networks.
TOP Manufacturers include: Cisco, 3COM, and Ericsson
Virtual Data Systems, Inc.
Value Proposition of IP Telephony
IP LAN Telephony or IP PBXs
NBX Chassis
NBX Call Processor
(NCP) card
NBX Business Telephone
Full-featured Ethernet-based
telephone
NBX Analog or Digital Line Card
NBX 10BASE-T Hub Card
NBX Open Platform allows for the
use of industry-standard network
hubs & switches to connect additional
telephone sets
Virtual Data Systems, Inc.
Value Proposition of IP Telephony
IP PBX Architecture
*NBX 100 is Independent
of the Network File Server
*NBX 100 System
stays up even when
the file server goes down.
Network
File Server
Hub or switch,
10/100
CAT-5 Ethernet
Can be Switched
10 Mbps
Virtual Data Systems, Inc.
Value Proposition of IP Telephony
Sample Application
SO / HO
IP Router or ISDN,
DSL LAN Modem
HUB
IP Network
PBX
Main Office
Layer 2
Switch
PSTN
Router
Virtual Data Systems, Inc.
Value Proposition of IP Telephony
Sample Application
NBX 100
Small Office 1
PSTN
Hub or Switch
IP Router
IP Network
Small Office 2
NBX 100
PSTN
Hub or Switch
IP Router
Virtual Data Systems, Inc.
Value Proposition of IP Telephony
VoIP Gateways
Allows the bridging of IP and circuit switched telephony devices
Primary Uses of VoIP Gateways
• Toll By-Pass, #1
• Integration of heterogeneous PBX environments over WAN
• IP Gateway for Mobility
• Telecommuters, SOHO
TOP Manufacturer VoIP Options
• Cisco, VoIP Card for 2600 series (and up) routers
• Manufacturer Specific Gateways, (Nortel, Lucent, Siemens, etc.)
• Ericsson WebSwitch (WebSwitch 100 and 2000)
Ericsson offers most overall flexibility and customer value
Virtual Data Systems, Inc.
Value Proposition of IP Telephony
How VoIP Works
EXT 101 places a call to ext 201. PBX A sees ext 201 as the gateway and sends
the call out to the GW. The GW compresses the voice and encapsulates it in an
IP packet and sends it to the destination of the other GW. The GW on LAN B must
strip out the IP, decompress the voice and route it to PBX B.
EXT 101
EXT 201
IP Network
GW
router
router
PBX A
PBX B
LAN A
Virtual Data Systems, Inc.
GW
Value Proposition of IP Telephony
LAN B
VoIP Application
Branch Office #1, FL
• Allows Toll By-Pass via FR Network
• Local dial tone at remote office
• 3 digit extension dialing between
offices
PBX
FR Network
Digital Handsets
Ericsson Webswitch 2000
Branch Office #2, TX
PBX
Main Office, CA
PBX
Digital Handsets
Digital Handsets
Virtual Data Systems, Inc.
Frame Relay Connection
Value Proposition of IP Telephony
VoIP Application
Telecommuter
• Toll By-Pass via Internet
• Analog phones appear
as extensions on WS200
PC
Analog Phone
DSLCable
connection
WS 100
Analog FAX
Internet
Webswitch 2000
Telecommuter
Main Office, CA
PC
PBX
Analog Phone
WS 100
Analog FAX
Digital Handsets
T1 Internet connection
Virtual Data Systems, Inc.
Value Proposition of IP Telephony
Issues Associated with proper VoIP Implementation
• Assess current user requirements and future needs (video ?)
• Assess corporate LAN / WAN infrastructure and determine required
upgrades or modifications, if required
• Implement correct Quality of Service and data prioritization (latency
problems)
• Modify security systems for VoIP (firewalls)
• Create and maintain master IP addressing to EXT schema
• Proactive monitoring of available network bandwidth and utilization rates
Virtual Data Systems, Inc.
Value Proposition of IP Telephony
Converged Networking from Virtual Data Systems
VDS has over 5 years of experience designing and implementing
converged networks supporting voice, video and data services
Only VDS can provide proven best of breed technologies:
• Cisco Premier Partner
• 3COM Voice Solutions Partner
• Ericsson-Webcom Solutions Partner
• Polycom Solutions Provider (IP video systems)
VDS can provide turnkey solutions including: system design, specification,
equipment supply, installation, configuration and user support services
Local and available to help YOU make the SALE!
Virtual Data Systems, Inc.
Value Proposition of IP Telephony
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Virtual Data Systems, Inc.
Value Proposition of IP Telephony