Transcript Dialogic - Completing the Convergence

Completing the
Convergence:
Reliable Fax over your
VoIP Network
Bud Walder
Enterprise Marketing Director
[email protected]
Agenda




Who is Dialogic
Why is Fax Relevant in This Century
Fax Market Drivers
Faxing over IP Networks
– T.30 Pass-Through vs. T.38 Fax-Relay
 FoIP over SIP Trunks: Deployment Scenarios
SLIDE 2
© Copyright 2010 Dialogic Corporation. All rights reserved.
Dialogic Highlights
 Dialogic and Veraz Networks completed merger October 1, 2010
 Listed on NASDAQ (DLGC)
 Annualized revenue greater than $250M1
 Leading portfolio of IP and TDM based multimedia processing
and call control enabling technologies and products
 World class service and support (24/7)
 Deployed:
– In High-Value Solutions that are in use by over 2 Billion
Mobile Subscribers
– In Network Infrastructure that carries over 5 Billion
minutes of traffic per month
– In 80% of Fortune 2000 companies
 70+ issued US patents
– Approximately 60 patent pending applications worldwide
– Approximately 25 issued foreign patents
SLIDE 3
The leading enabler for
unleashing profit from
video, voice and data for
advanced networks
© Copyright 2010 Dialogic Corporation. All rights reserved.
1 Following the merger and subsequent integration of the two companies and after excluding adjustments to revenue under purchase accounting rules
Rich Heritage of M&A
SLIDE 4
© Copyright 2010 Dialogic Corporation. All rights reserved.
Broad Multimedia Processing and Call Control Infrastructure
Product Portfolio
Video Processing
Server Software
Multimedia Processing
Server Platforms
Multimedia
Processing
Infrastructure
• Dialogic® PowerMedia™ (HMP, IPMS and WMS) Server Software
• Dialogic® Media and Network Interface Boards (HMP interface series of
boards, DM3 series, CG series, JCT series, Diva ®series, and Brooktrout®
series)
• Dialogic®CSP and MSP platform
Bandwidth Optimization
VoIP / FoIP Gateways
Video
Gateways
• Dialogic® BorderNet™, IMG, and DMG series of service provider
and enterprise gateways
• Dialogic I-Gate® 4000 and DTX-600 series
• Dialogic I-Gate® 4000 Session Bandwidth Optimizer Core
• Dialogic I-Gate® 4000 Session
Bandwidth Optimizer
Backhaul
• Dialogic® BorderNet™ 3000 SBC
Services
SLIDE 5
• Dialogic® Vision™ 1000
Video GW
Wireless Backhaul
Bandwidth Optimization
Session Border Controller
Call Control
Infrastructure
• Dialogic® PowerMedia™
Server Software
• Dialogic® Brooktrout®
Fax Software
Signaling
Softswitch
• Dialogic® ControlSwitch™ Softswitch
• Dialogic® DSI Signaling Servers
• Dialogic® TX and DSI Series of
boards and software
Services
• Dialogic® ActionLine™ and Dialogic® Pro™ Services annuity support, installation and professional services
© Copyright 2010 Dialogic Corporation. All rights reserved.
Market Drivers:
The Relevancy of Fax in
the 21st Century
Why is Fax Still Relevant in This Century?
 Fax Servers
– Document Management & Workflow
– Production Fax & Productivity Enhancement
– Compliance & Multi-Function Peripheral Integration
 Fax as “table stakes” for participation in Unified Communications
Market Segment
– OCS
 Migration to Fax over IP (FoIP)
SLIDE 7
© Copyright 2010 Dialogic Corporation. All rights reserved.
What’s Driving Fax Sales Today?
 Corporate networks moving to VoIP
 Adoption of multi-functional peripherals (MFPs)
 Regulatory compliance
 Technology upgrades & interest in UM/UC
 Server virtualization
SLIDE 8
© Copyright 2010 Dialogic Corporation. All rights reserved.
Faxing over IP Networks
Pass-Through
vs.
T.38 Fax-Relay
Traditional Faxing vs. Fax Over IP (FoIP)
 Traditional Faxing is based on the T.30 Protocol
– T.30 was designed for a network with relatively smooth and
uninterrupted data flows.
– T.30 is an audio protocol. The sending and receiving fax machines are
listening to the tones generated by the other machine. If tones are
distorted, then the fax image will not be transmitted correctly.
SLIDE 10
© Copyright 2010 Dialogic Corporation. All rights reserved.
Why T.30 Fax Doesn’t Work Reliably on a VoIP Network
 As mentioned in the previous slide, T.30 was designed for a
network with relatively smooth and uninterrupted data flows
 This is the opposite of the way an IP network was designed to
operate. In other words the T.30 fax protocol was not created to
tolerate the latency, jitter, and packet loss that are inherent in an
IP network.
 The audio compression that takes place on a VoIP network may
not affect a Voice call but can severely affect a Fax call.
SLIDE 11
© Copyright 2010 Dialogic Corporation. All rights reserved.
How (NOT) to get a fax over an IP Network
 Do Nothing
– Attach your fax machines to your VoIP Network and live with the
80%-90% single page success rate that is achievable this way.
– However, realize that the chance of a failed transmission is
exponential as the number of pages increases.
 At 80% single page success rate
1 Page Fax - 0.81 – 80% Document Success Rate
2 Page Fax – 0.82 – 64% Document Success Rate
20 Page Fax – 0.820 – 0.922% Document Success Rate
55 Page Fax – 0.855 – 0.000% Document Success Rate
SLIDE 12
© Copyright 2010 Dialogic Corporation. All rights reserved.
Faxing over an IP Network Option 1:
Fax Pass-Through
 A simple technique for creating a “fax friendly" environment on a
VoIP network.
 Makes very little distinction between voice calls and fax calls.
 Also called Voice Band Data (VBD) by the ITU, it refers to the
transport of fax or modem signals over a voice channel through a
packet network with an encoding appropriate for fax or modem
signals.
– G.711 (u-law or a-law)
– Voice Activity Detection (VAD) off
– Echo Cancelation (EC) off
SLIDE 13
© Copyright 2010 Dialogic Corporation. All rights reserved.
Establishing a Fax Pass-Through Session
 Two Techniques
– Dedicated Fax Trunks
• All ATAs, IADs, and gateways to be permanently locked at G.711 with VAD and
EC disabled
• Easy to manage but the cost is the loss of the having a dedicated fax trunk
• More expensive
• Severely restricts the ability of telecom administrators to take advantage of any
trunk sharing capabilities available with the PBX or IP-PBX in their infrastructure.
– Dynamically Configured Fax Trunks
• Gateways that are able to distinguish between a voice call and a fax call in real
time by detecting the V.21 preamble, which is part of all fax calls. Once this
preamble is detected, the gateway automatically switches to Fax Pass-Through
mode
– David Haynes and Gonzalo Salguiero, Fax, Modem, and Text for IP
Telephony (Cisco Press, 2008)
SLIDE 14
© Copyright 2010 Dialogic Corporation. All rights reserved.
Faxing over an IP Network Option 2:
T.38 ‘Fax Relay’
 Breaks down the T.30 fax tones into their HDLC frames (known as
demodulation) before sending the fax information through the
network.
 This information is sent across the voice network using the T.38
Fax Relay protocol, and is then converted back into T.30 fax tones
at the endpoint (known as modulation).
 The fax machines on either end are sending and receiving tones
and are not aware that any demodulation or modulation is
occurring.
 Uses a variety of techniques to keep the T.30 session
communication between two T.30 endpoints from failing even
when significant delay, jitter, and packet-loss occur.
SLIDE 15
© Copyright 2010 Dialogic Corporation. All rights reserved.
Fax Pass-Through vs. T.38 Fax Relay
 T.30 Fax Pass-Through
–
–
–
–
G.711 (u-law or a-law)
Voice Activity Detection (VAD) off
Echo Cancelation (EC) off
Move the audio (fax tones) through the network with as little
distortion as possible
 T.38 Fax Relay
– Demodulate the tones as close to the sending machine as possible.
– Remodulate the tones as close to the receiving machine as possible
SLIDE 16
© Copyright 2010 Dialogic Corporation. All rights reserved.
Fax Pass-Through vs. T.38 Fax Relay (con’t)
How do these two methods hold up in
the face of Delay, Packet Loss and Jitter?
SLIDE 17
© Copyright 2010 Dialogic Corporation. All rights reserved.
Effects of Delay, Packet Loss and Jitter on FoIP
The packet-based networks performance
requirements for real-time facsimile transmission
- Tomaz Aljaz, Bohan Imperl, Urban
Mrak, December 2006
SLIDE 18
© Copyright 2010 Dialogic Corporation. All rights reserved.
Effects of Delay on FoIP
 The effects of fixed delay were nominal on both image quality and
success rate.
 The test page was sent successfully (nearly 100% success rate) in
both pass-through and relay mode with no image distortion.
 Increase in delay did result in measurably longer transmission
times (as much as 15% longer transmission times with 500ms of
network delay).
 Delay increased transmission time more significantly in Relay
Mode than it did in Pass-Through Mode.
SLIDE 19
© Copyright 2010 Dialogic Corporation. All rights reserved.
Effects of Jitter on FoIP – T.38 Fax Relay
Jitter has no effect when sending faxes via T.38 Fax Relay
“It was not possible to recreate a network condition
in the testing environment that the T.38 protocol,
in redundant or non-redundant mode, could not
have coped with.”
- Toma Aljaz, Boyan Imperl, and Urban Mrak, “The packet-based networks performance requirements
for real-time facsimile transmission,” Computer Communications, Volume 30, Number 6, pp 1289-1300
(March 2007)
SLIDE 20
© Copyright 2010 Dialogic Corporation. All rights reserved.
Effects of Jitter on FoIP – Fax Pass-Through
Jitter has significant negative impact on Fax Pass-Through
– With a nominal delay of 60 ms and the maximum length of the jitter buffer set to
100 ms, the success rate for faxes sent using Fax Pass-Through fell to below 80%
with delay variance of as little as 17 ms in some configurations.
– Other configurations did stay at about an 80% success rate until the variance
reached 25 ms.
– The amount of Variance is more significant the degree of Variance.
Success rate in Pass-Through mode increased when the maximum size of the
jitter was set equal to the expected nominal delay. Increasing the maximum
length of the jitter buffer to match the nominal delay had a negative effect on
the quality of the voice conversations carried over the converged network.
SLIDE 21
© Copyright 2010 Dialogic Corporation. All rights reserved.
Effects of Packet Loss on FoIP
In all cases except T.38 in Redundant mode, just 1%
packet loss caused 20% single-page failure rate
In T.38R Mode, single-page Success Rate stayed above
80% until packet loss exceed 4%
Caveat:
Even in T.38R mode, bursty packet loss in which more than 10 packets
in a row are lost, will significantly impact the success rate mode
SLIDE 22
© Copyright 2010 Dialogic Corporation. All rights reserved.
Effects of Delay, Packet Loss and Jitter on FoIP - Summary
T.30 Pass-Through
Success rates
T.38 Fax Relay
Success Rates
Delay
Minimal Impact
Minimal Impact
Jitter
Significant Impact
Minimal Impact
Packet Loss
Significant Impact
Minor Impact
IP Network Issue
SLIDE 23
© Copyright 2010 Dialogic Corporation. All rights reserved.
Conclusion:
T.38 = Reliable FoIP
At 80% Single Page Success rate:
– A fax document of more than 20 pages has less than a
1% chance of success.
– A 55 Page Fax statistically cannot be delivered
successfully.
T.38 Fax Relay must be implemented throughout the network to
meet the needs of the Market Place.
In Addition, a T.38 call uses 20% of the amount of bandwidth needed
for Fax Pass-Through. Fax Relay is a T.38 fax transmission that uses
a stream of bits running at an average speed of 14,400 bps. Fax
Pass-Through is a G.711 stream of audio samples running at
64,000 bps. Using Fax Relay can result in a bandwidth savings of
80% over Fax Pass-Through.
SLIDE 24
© Copyright 2010 Dialogic Corporation. All rights reserved.
FoIP over SIP Trunks:
Deployment Issues
Deploying Fax and FoIP
 Deployment Scenarios
– Fax Server + PBX / PSTN
– FoIP Server + T.38 Gateway + PSTN Service
– FoIP Server + T.38 IP-PBX + PSTN Service
– FoIP Server + SBC / Gateway + T.38 enabled SIP Trunk Service
– Fax Server (TDM) + T.38 Gateway + SIP Trunk
SLIDE 26
© Copyright 2010 Dialogic Corporation. All rights reserved.
Circuit-Switched Faxing
Fax Machine
Fax Server
T.30
PSTN
Desktop Fax
Application
T.30
image conversion
engine
image conversion
engine
T.30 protocol
T.30 protocol
T.30 data
PSTN interface
PSTN interface
64 kbps bandwidth
SLIDE 27
© Copyright 2010 Dialogic Corporation. All rights reserved.
Faxing with a FoIP gateway
PBX
FoIPServer
Desktop Fax
Application
image conversion
engine
Traditional
Fax Machine
 FoIP Gateway
PSTN
T.38
image conversion
engine
T.30
T.30 protocol
T.38 end point
protocol
IP network
interface
SLIDE 28
T.30 protocol
T.38 fax relay
protocol
T.38
data
much less
bandwidth
IP
© Copyright 2010 Dialogic Corporation. All rights reserved.
PSTN
T.30 data
PSTN interface
FoIP with an Interoperable IP-PBX
Traditional
Fax Machine
 IP-PBX
 FoIPServer
PSTN
Desktop Fax
Application
image conversion
engine
T.38
T.30
T.30 protocol
T.38 end point
protocol
IP network
interface
SLIDE 29
image conversion
engine
T.30 protocol
T.38 fax relay
protocol
T.38
data
much less
bandwidth
IP
© Copyright 2010 Dialogic Corporation. All rights reserved.
PSTN
T.30 data
PSTN interface
FoIP with an Interoperable SBC and SIP Trunk Service
ISP
SIP Trunk Service
w/ T.38 Support
ITSP
PSTN
SIP
Interop
SIP QoS
Demarcation
SIP
Security
TDM / PSTN
Gateway
Firewall / NAT
Traversal
Fax / FoIP
Gateway
Broadband
Internet
Service
Fax
Machine
PSTN Failover /
Alternate Route
Dialogic® BorderNet™ 500 Gateway
w/ Session Border Control
•IP-PBX
•FoIP Server
IPPhone
IP SoftPhone
* - Please refer to ‘USE CASE(S)’ portion of the Legal Notice on the last slide
SLIDE 30
© Copyright 2010 Dialogic Corporation. All rights reserved.
Fax
Machine
ATA / FXS
Gateway
POTs
Phone
Faxing with an Interoperable SBC / Gateway and SIP Trunk Service
ISP
SIP Trunk Service
w/ T.38 Support
ITSP
PSTN
SIP
Interop
SIP QoS
Demarcation
SIP
Security
TDM / PSTN
Gateway
Firewall / NAT
Traversal
Fax / FoIP
Gateway
Broadband
Internet
Service
Fax Machine
Optional PBX
/ PSTN
Gateway
Connectivity
Support
BorderNet 500 Gateway w/
Session Border Control
Legacy PBX
(non-SIP)
•Fax
Servers
Corporate LAN / WAN
Digital Phone
POTs Phone
Fax Machine
* - Please refer to ‘USE CASE(S)’ portion of the Legal Notice on the last slide
SLIDE 31
© Copyright 2010 Dialogic Corporation. All rights reserved.
Dialogic® Products that Support T.38
Dialogic® Brooktrout® TR1034 Fax Boards
Dialogic® Brooktrout® SR140 Fax Software
Dialogic® Host Media Processing (HMP) Software
Dialogic® IP Media Server
Dialogic ® Integrated Media Gateways
Dialogic® Media Gateway Series
Dialogic® BorderNet™ 500 Gateways
SLIDE 32
© Copyright 2010 Dialogic Corporation. All rights reserved.
Why Choose Dialogic?
 Dialogic Enables our Partners to Create Innovative
Applications in a Timely Manner, and is Investing to
grow its position as the #1 Open Systems provider for
the Converged Communication Market segment
– Engineering
– Sales and Marketing
– Unrivaled Ecosystem of Partners
 Dialogic and our Products are there for you so you can
Deliver your Solution to Market
– Global Experience and Presence
– World Class Service And Support (24x7)
– Building Blocks At All Levels For Service Providers And
Enterprise
– Product Reliability and Delivery
SLIDE 33
© Copyright 2010 Dialogic Corporation. All rights reserved.
Wrap Up
 Fax is Still Relevant Today
 TDM solution are giving way to FoIP solutions
– There are both benefits and pitfalls to be aware of when moving to
an FoIP solution
 There are many options when implementing an FoIP Solution
–
–
–
–
–
–
SLIDE 34
Internal Hardware
Software Only Solutions
Gateways and Appliances
Virtualized Solutions
SIP Trunking
Hosted Solutions
© Copyright 2010 Dialogic Corporation. All rights reserved.
Dialogic, Dialogic Pro, Brooktrout, Diva, Diva ISDN, Making Innovation Thrive, Video is the New Voice, Diastar, Cantata, TruFax, SwitchKit, SnowShore, Eicon, Eicon
Networks, NMS Communications, NMS (stylized), Eiconcard, SIPcontrol, TrustedVideo, Exnet, EXS, Connecting to Growth, Fusion, Vision, PacketMedia,
NaturalAccess, NaturalCallControl, NaturalConference, NaturalFax and Shiva, among others as well as related logos, are either registered trademarks or trademarks of
Dialogic Corporation or its subsidiaries (“Dialogic”). The names of actual companies and products mentioned herein are the trademarks of their respective owners.
Dialogic encourages all users of its products to procure all necessary intellectual property licenses required to implement their concepts or applications, which licenses
may vary from country to country. Dialogic may make changes to specifications, product descriptions, and plans at any time, without notice.
This document discusses one or more open source products, systems and/or releases. Dialogic is not responsible for your decision to use open source in connection
with Dialogic products (including without limitation those referred to herein), nor is Dialogic responsible for any present or future effects such usage might have,
including without limitation effects on your products, your business, or your intellectual property rights.
USE CASE(S)
Any use case(s) shown and/or described herein represent one or more examples of the various ways, scenarios or environments in which Dialogic products can be
used. Such use case(s) are non-limiting and do not represent recommendations of Dialogic as to whether or how to use Dialogic products.
06/10
SLIDE 35
© Copyright 2010 Dialogic Corporation. All rights reserved.
Completing the
Convergence:
Reliable Fax over your
VoIP Network
Q&A
Jeff Dworkin
[email protected]
http://twitter.com/diastar
http://facebook.com/jeffreygdworkin
Driver : Enterprise Adoption of VoIP
 VoIP = Voice over IP
 Why Put Voice on an IP Network?
– Convergence reduces operating expense
– Using VoIP reduces telephony costs
 Other VoIP Drivers
– End-user productivity
– PBX providers driving upgrades (e.g., Cisco, Avaya)
 VoIP Deployments Drive the Need for FoIP
– As part of the migration to VoIP, enterprises need to move their fax
infrastructure to IP
SLIDE 37
© Copyright 2010 Dialogic Corporation. All rights reserved.
Driver : Continued Adoption of MFPs
 MFP = multi-function peripheral
 Enables consolidation & centralization of Fax infrastructure
– Easier to manage a single shared resource
– Elimination of Fax machines and associated costs
 Sales of MFPs will grow 24% by 2010 (IDC)
 MFPs Drive Growth of Fax Servers
– MFP related fax server sales projected to grow 25% CAGR through
2011 (Davidson)
 Adoption of MFPs creates demand for IP-based Fax
SLIDE 38
© Copyright 2010 Dialogic Corporation. All rights reserved.
Driver : Compliance Regulations
Compliance regulations
– E.g. Sarbanes-Oxley, HIPAA, USA Patriot Act
– Forces businesses to track all messages and paper transactions,
retrieve them, and to secure them confidentially
– Personal liability of directors
 Drives increased use of MFPs and Fax Servers
SLIDE 39
© Copyright 2010 Dialogic Corporation. All rights reserved.
Driver: Technology Upgrades
 Upgrades of Servers
–
–
–
–
OS upgrades can drive server changes
PCI, PCI-X to PCI-Express issues
Boards to board-less IP-based technology
Easy opportunity to introduce/sell FoIP
 Upgrades of PBXs
– Depending on vendor, IP migration may require an allIP solution including Fax
– A natural opportunity to introduce/sell FoIP
SLIDE 40
© Copyright 2010 Dialogic Corporation. All rights reserved.
Driver: Server Virtualization
 Virtual server technology (e.g. VMware,
virtual server or Hyper-V) support multiple
PC images running on one physical PC.
 Fax boards are not supported in virtual
servers so all-software solutions are
required – FoIP is the answer.
 This is also important for business
continuity and disaster recovery plans.
SLIDE 41
© Copyright 2010 Dialogic Corporation. All rights reserved.
Software Only Solution vs. Virtualization
 Even though solution may exist as “Software Only” that does not
guarantee that they can be virtualized.
 You still may need a Dedicated Server for each instance of the
software
Fax Server #1
SLIDE 42
Fax Server #2
© Copyright 2010 Dialogic Corporation. All rights reserved.
CRM Server #1 CRM Server #2
Software Only Solution vs. Virtualization
Fax Server #1
Fax Server #2
Virtual Server
#1
SLIDE 43
© Copyright 2010 Dialogic Corporation. All rights reserved.
CRM Server #1 CRM Server #2
Virtual Server
#2
Software Only Solution vs. Virtualization
 Now you only have two servers
– Each one is running both applications
• Fax Server
• CRM Server
 Real Virtualization
 Real Redundancy
Virtual Server
#1
SLIDE 44
© Copyright 2010 Dialogic Corporation. All rights reserved.
Virtual Server
#2
Delay
 Latency is the amount of time it takes for a sound uttered at one
end of a conversation to arrive at the ear of the distant end of the
conversation.
 Delay (or Fixed Delay) is that part of Latency that is a result of the
physical configuration and/or design of the system
– Processor Speed to Packetize
– Distance the Packets have to travel
– Processor Speed to DePacketize
 It is defined in a Perfect World
SLIDE 45
© Copyright 2010 Dialogic Corporation. All rights reserved.
Jitter
 Jitter is the Variable portion of Latency caused by the randomness
of the World in general and the IP Network in particular
–
–
–
–
Load on the processor doing the packetization
Network Traffic
Routing Errors
Load on the processor doing the depacketization
 In a VoIP Implementation this variability is managed using a Jitter
Buffer
SLIDE 46
© Copyright 2010 Dialogic Corporation. All rights reserved.
Packet Loss
 Packet loss occurs when one or more packets of data traveling
across a computer network fail to reach their destination.
 Packet loss can be caused by a number of factors
–
–
–
–
–
–
SLIDE 47
Signal degradation over the network medium
Oversaturated network links
Corrupted packets rejected in-transit
Faulty networking hardware
Maligned system drivers or network applications
Normal routing routines
© Copyright 2010 Dialogic Corporation. All rights reserved.
FoIP Server + Media Gateway: Example Use Cases*
– Enables FoIP Server in TDM and Hybrid PBX Environment
– Enables Fax Server to be Deployed as a Virtual Server
– Enables Centralized Fax Servers for Multi-Site Organizations
T.30 Fax
T.38 FoIP
Dialogic® 2000
Media Gateway
Series
PSTN
PBX
* - Please refer to ‘USE CASE(S)’ portion of the
Legal Notice on the last slide
WAN
Remote Site
PBX
SLIDE 48
© Copyright 2010 Dialogic Corporation. All rights reserved.
Dialogic®
Brooktrout® SR140
Fax Software-based
Fax Server
Appliance use in a VoIP/FoIP Implementation
IP Telephony
Service Provider
IP Network
PSTN
PSTNVoIP
Gateway
Broadband
Internet
Access
Firewall
IP PBX /
Contact Center
Corporate Voice and Data LAN
Virtualized
Fax Server
SLIDE 49
© Copyright 2010 Dialogic Corporation. All rights reserved.
Benefits Offered by using Appliances
 Fax documents are moved through the corporate WAN rather than
into the PSTN or to the ITSP, reducing long distance telephony
costs
 Using Centralized Servers (with Appliances at the edge) to reduce
capital and operational expenses
 Appliances are easy to install and may be remotely configured,
reducing associated time and expense while still being able to
increase the capacity of the implementation as needed
 Appliances enhance reliability, redundancy and survivability
SLIDE 50
© Copyright 2010 Dialogic Corporation. All rights reserved.
SIP Trunking in a VoIP/FoIP Implementation
IP Telephony
Service Provider
IP Network
Broadband
Internet
Access
PSTN
PSTNVoIP
Gateway
PSTNVoIP
Gateway
Firewall
IP PBX /
Contact Center
Corporate Voice and Data LAN
Virtualized
Fax Server
SLIDE 51
© Copyright 2010 Dialogic Corporation. All rights reserved.
Benefits Offered by using SIP Trunking
 By maintaining only a single data network, rather than a voice
network, SIP Trunking can reduce capital and operational expenses
 Without a connection to the PSTN, business operations can be
streamlined with fewer vendors to deal with
 Interoperability and Gateway maintenance are handled by the
carrier rather than the enterprise, reducing operational complexity
and expenses
SLIDE 52
© Copyright 2010 Dialogic Corporation. All rights reserved.
Hosted Services in a VoIP/FoIP Implementation
IP Telephony
Service Provider
IP Network
Broadband
Internet
Access
Virtualized
Fax Server
PSTN
PSTNVoIP
Gateway
Firewall
IP PBX /
Contact Center
Corporate Voice and Data LAN
Virtualized
Fax Server
SLIDE 53
© Copyright 2010 Dialogic Corporation. All rights reserved.
Benefits Offered by using Hosted Fax Services





Effectively manage Overflow or Unexpected Spikes in usage
Minimize Capital Outlay and Potential Obsolescence Issues
Remove geographic limitation of a CPE based solution
Disaster Recovery
Business Continuity
SLIDE 54
© Copyright 2010 Dialogic Corporation. All rights reserved.
Fax is NOT Going Away
 The Marketing for Individual Fax Machines in Shrinking
 But the Fax Server Marketing is actually Growing
– “The Fax over IP Fax Server segment is expected to show a
Compounded Annual Growth Rate (CAGR) of 39.2% through 2011 and
be worth $340 million.”
– Davidson Consulting, Computer-Based Fax Marketing, 2006-2011
(December 2007)
SLIDE 55
© Copyright 2010 Dialogic Corporation. All rights reserved.
References
 [Aljaz] Toma Aljaz, Boyan Imperl, and Urban Mrak, “The packetbased networks performance requirements for real-time facsimile
transmission,” Computer Communications, Volume 30, Number 6,
pp 1289-1300 (March 2007)
 [Davidson] Davidson Consulting, Computer-Based Fax Marketing,
2006-2011 (December 2007)
 [Haynes] David Haynes and Gonzalo Salguiero, Fax, Modem, and
Text for IP Telephony (Cisco Press, 2008)
SLIDE 56
© Copyright 2010 Dialogic Corporation. All rights reserved.