completing the convergence: reliable fax over your voip network bud walder enterprise marketing...
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Completing the Convergence:
Reliable Fax over your VoIP Network
Bud WalderEnterprise Marketing Director
Bud.walder@dialogic.com
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 2
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
Agenda
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 3
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
1 Following the merger and subsequent integration of the two companies and after excluding adjustments to revenue under purchase accounting rules
The leading enabler for unleashing profit from
video, voice and data for advanced networks
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 4
Rich Heritage of M&A
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 5
Bandwidth Optimization VoIP / FoIP Gateways
Bandwidth Optimization VoIP / FoIP Gateways
Broad Multimedia Processing and Call Control InfrastructureProduct Portfolio
Call Control InfrastructureCall Control
Infrastructure
Multimedia Processing
Infrastructure
Multimedia Processing
Infrastructure
Session Border ControllerSession Border ControllerWireless Backhaul
Bandwidth Optimization
Wireless Backhaul Bandwidth Optimization
SoftswitchSoftswitch
VideoGateways
VideoGateways
Multimedia Processing Server Platforms
Multimedia Processing Server Platforms
SignalingSignaling
ServicesServicesServicesServices
Video ProcessingServer Software
Video ProcessingServer Software
• 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
• 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® PowerMedia™ Server Software
• Dialogic® Brooktrout® Fax Software
• Dialogic® ActionLine™ and Dialogic® Pro™ Services annuity support, installation and professional services
• Dialogic® Vision™ 1000 Video GW
• Dialogic I-Gate® 4000 Session Bandwidth Optimizer Backhaul
• Dialogic® DSI Signaling Servers• Dialogic® TX and DSI Series of
boards and software
• Dialogic® BorderNet™ 3000 SBC
• Dialogic® ControlSwitch™ Softswitch
Market Drivers:
The Relevancy of Fax in the 21st Century
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 7
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)
Why is Fax Still Relevant in This Century?
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 8
Corporate networks moving to VoIP
Adoption of multi-functional peripherals (MFPs)
Regulatory compliance
Technology upgrades & interest in UM/UC
Server virtualization
What’s Driving Fax Sales Today?
Faxing over IP Networks
Pass-Through vs.
T.38 Fax-Relay
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 10
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.
Traditional Faxing vs. Fax Over IP (FoIP)
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 11
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.
Why T.30 Fax Doesn’t Work Reliably on a VoIP Network
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 12
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 Rate2 Page Fax – 0.82 – 64% Document Success Rate20 Page Fax – 0.820 – 0.922% Document Success Rate55 Page Fax – 0.855 – 0.000% Document Success Rate
How (NOT) to get a fax over an IP Network
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 13
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
Faxing over an IP Network Option 1: Fax Pass-Through
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 14
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)
Establishing a Fax Pass-Through Session
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 15
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.
Faxing over an IP Network Option 2: T.38 ‘Fax Relay’
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 16
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
Fax Pass-Through vs. T.38 Fax Relay
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 17
How do these two methods hold up in the face of Delay, Packet Loss and Jitter?
Fax Pass-Through vs. T.38 Fax Relay (con’t)
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 18
Effects of Delay, Packet Loss and Jitter on FoIP
The packet-based networks performancerequirements for real-time facsimile transmission
- Tomaz Aljaz, Bohan Imperl, Urban Mrak, December 2006
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 19
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.
Effects of Delay on FoIP
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 20
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)
Effects of Jitter on FoIP – T.38 Fax Relay
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 21
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.
Effects of Jitter on FoIP – Fax Pass-Through
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 22
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
Effects of Packet Loss on FoIP
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 23
IP Network IssueT.30 Pass-Through
Success ratesT.38 Fax Relay Success Rates
Delay Minimal Impact Minimal Impact
Jitter Significant Impact Minimal Impact
Packet Loss Significant Impact Minor Impact
Effects of Delay, Packet Loss and Jitter on FoIP - Summary
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 24
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.
Conclusion: T.38 = Reliable FoIP
FoIP over SIP Trunks:Deployment Issues
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 26
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
Deploying Fax and FoIP
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 27
Fax Server Fax Machine
image conversion engine
T.30 protocol T.30 protocol
PSTN interface
T.30 data
Desktop Fax Application
PSTN interface
image conversion engine
64 kbps bandwidth
T.30
Circuit-Switched Faxing
T.30
PSTN
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 28
FoIP Gateway
image conversion engine
T.30 protocol
T.38 end point protocol
T.30 protocol
PSTN interfaceIP network interface PSTNIP
T.38 datamuch lessbandwidth
T.30 dataT.38 fax relay protocol
FoIPServer Traditional Fax Machine
Desktop Fax Application
PSTNimage conversion engine
Faxing with a FoIP gateway
T.30
T.38
PBX
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 29
IP-PBX
image conversion engine
T.30 protocol
T.38 end point protocol
T.30 protocol
PSTN interfaceIP network interface PSTNIP
T.38 datamuch lessbandwidth
T.30 dataT.38 fax relay protocol
FoIPServer Traditional Fax Machine
Desktop Fax Application
PSTN
image conversion engine
FoIP with an Interoperable IP-PBX
T.30T.38
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 30
SIP Interop
SIP QoS Demarcation
SIP Security
TDM / PSTN Gateway
Firewall / NAT Traversal
Fax / FoIP Gateway
FoIP with an Interoperable SBC and SIP Trunk Service
•IP-PBX
•FoIP Server
IP-PhoneIP Soft-Phone
ATA / FXS Gateway
Fax Machine
POTs Phone
ITSPISP PSTN Fax Machine
SIP Trunk Service w/ T.38 Support Broadband
Internet Service
Dialogic® BorderNet™ 500 Gateway w/ Session Border Control
* - Please refer to ‘USE CASE(S)’ portion of the Legal Notice on the last slide
PSTN Failover / Alternate Route
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 31
SIP Trunk Service w/ T.38 Support
SIP Interop
SIP QoS Demarcation
SIP Security
TDM / PSTN Gateway
Firewall / NAT Traversal
Fax / FoIP Gateway
Faxing with an Interoperable SBC / Gateway and SIP Trunk Service
ITSPISP PSTN
•Fax Servers
Legacy PBX (non-SIP)
POTs Phone
Fax Machine
Digital Phone
Broadband Internet Service
BorderNet 500 Gateway w/ Session Border Control
Optional PBX / PSTN Gateway Connectivity Support
* - Please refer to ‘USE CASE(S)’ portion of the Legal Notice on the last slide
Corporate LAN / WAN
Fax Machine
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 32
Dialogic® Brooktrout® TR1034 Fax BoardsDialogic® Brooktrout® SR140 Fax SoftwareDialogic® Host Media Processing (HMP) Software Dialogic® IP Media ServerDialogic ® Integrated Media Gateways Dialogic® Media Gateway SeriesDialogic® BorderNet™ 500 Gateways
Dialogic® Products that Support T.38
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 33
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
Why Choose Dialogic?
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 34
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– Internal Hardware– Software Only Solutions– Gateways and Appliances– Virtualized Solutions– SIP Trunking– Hosted Solutions
Wrap Up
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 35
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
Completing the Convergence:
Reliable Fax over your VoIP Network
Jeff Dworkinjeff.dworkin@dialogic.comhttp://twitter.com/diastar
http://facebook.com/jeffreygdworkin
Q & A
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 37
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
Driver : Enterprise Adoption of VoIP
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 38
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
Driver : Continued Adoption of MFPs
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 39
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
Driver : Compliance Regulations
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 40
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 all-
IP solution including Fax– A natural opportunity to introduce/sell FoIP
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 41
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.
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 42
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
Software Only Solution vs. Virtualization
Fax Server #1 Fax Server #2 CRM Server #1 CRM Server #2
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 43
Software Only Solution vs. Virtualization
Fax Server #1 Fax Server #2 CRM Server #1 CRM Server #2
Virtual Server #1
Virtual Server #2
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 44
Now you only have two servers– Each one is running both applications
• Fax Server• CRM Server
Real Virtualization Real Redundancy
Software Only Solution vs. Virtualization
Virtual Server #1
Virtual Server #2
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 45
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
Delay
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 46
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
Jitter
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 47
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– 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
Packet Loss
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 48
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
PSTN
Dialogic® Brooktrout® SR140 Fax Software-based Fax Server
PBX
Dialogic® 2000 Media Gateway Series
T.38 FoIPT.30 Fax
PBX
Remote SiteWAN* - Please refer to ‘USE CASE(S)’ portion of the
Legal Notice on the last slide
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 49
Appliance use in a VoIP/FoIP Implementation
PSTNIP Network
Firewall
Broadband Internet Access
IP Telephony Service Provider
IP PBX / Contact Center
PSTN-VoIP
Gateway
Corporate Voice and Data LAN
VirtualizedFax Server
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 50
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
Benefits Offered by using Appliances
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 51
SIP Trunking in a VoIP/FoIP Implementation
PSTNIP Network
Firewall
Broadband Internet Access
IP Telephony Service Provider
IP PBX / Contact Center
PSTN-VoIP
Gateway
Corporate Voice and Data LAN
VirtualizedFax Server
PSTN-VoIP
Gateway
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 52
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
Benefits Offered by using SIP Trunking
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 53
Hosted Services in a VoIP/FoIP Implementation
PSTN
Firewall
Broadband Internet Access
IP PBX / Contact Center
Corporate Voice and Data LAN
VirtualizedFax Server
VirtualizedFax Server
IP Network
IP Telephony Service Provider
PSTN-VoIP
Gateway
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 54
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
Benefits Offered by using Hosted Fax Services
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 55
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)
Fax is NOT Going Away
© Copyright 2010 Dialogic Corporation. All rights reserved.SLIDE 56
[Aljaz] 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)
[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)
References
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