OpenText - Understanding FoIP Fax Solutions

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Although an essential tool for business communication, faxing is often overlooked when it comes to Voice-over-IP (VoIP) technology. Unfortunately, many business and IT decision makers don’t …

Although an essential tool for business communication, faxing is often overlooked when it comes to Voice-over-IP (VoIP) technology. Unfortunately, many business and IT decision makers don’t necessarily understand that fax is not included as part of their new, money-saving VoIP phone systems and are either forced to add a digital faxing solution or, in the worst case scenario, re-introduce an analog phone line for dedicated fax receiving and transmission. However, Fax-over-IP (FoIP) is an integrated and interoperable solution that allows users to transmit faxes over their VoIP networks which can save a lot of time, money, and trouble.

• Gain a better understanding of how FoIP works and why it’s such a good way to automate time-intensive manual paper-driven processes
• Discover the best ways of using FoIP for integration of the most common business applications and systems while also saving money
• Find out how a global enterprise fax solution can accelerate the exchange of information and maximize productivity

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  • exploded, there were over 4 million fax machines in use across the world
  • One reason that fax over IP (FoIP) has somewhat lagged behind the large shift to VoIP is that fax communications are rarely the dominant form of telephony communication for a business. Migrating an organization’s main form of telephony communication over to IP was the first priority and this is almost always voice traffic. Being the minority form of communication relegated fax migration to IP to the backseat behind voice. Now, as VoIP has matured, organizations continue to push towards a comprehensive Unified Communications solution where IP is the backbone for all communications, including fax. In some cases, fax and voice were initially migrated over to IP together until it quickly became apparent that fax communications were different than voice. Treating fax traffic like voice traffic in an IP network is not a reliable solution and faxes were often moved back to their traditional telephony connections. However, numerous solutions are now available designed specifically to reliably handle the transport of fax communications.
  • Unified Communication strategies were developed to break down barriers of communication and make voice, email, multi-media and fax accessible in one locationHowever, since fax is usually not the dominant method of communication, it is often the single most overlook element of UC strategies
  • A truly comprehensive UC strategy should alwaysinclude fax
  • There are 3 main ways to doing t.38Pass through. This uses g.711 and is bassically a VoIP call passing FoIP traffict.37 Noone does this any more. T.38 is the standarf for FoIP. It provides the best quality of service at a lower bandwith. Now there is a Very inpoirtant point I want to call out around t.38. In the Cisco world there are 2 types of T.38. Cisco Preoprity version and the standard based one. Fax servers only use the Standards based t.38.
  • The sending machine uses T38 to speak to a gateway, the gateway converts the fax to T30 so that it can speak to any fax machine and is not limited to other FoIP installations
  • Positioning statement

Transcript

  • 1. Understanding FoIP Fax Solutions August Startz, RightFax Sales Engineer Amy Campos, Product Marketing Manager
  • 2. Presenters  Amy Campos, Product Marketing Manager for RightFax Fax Solutions with OpenText  Responsible for helping customers understand how OpenText fax solutions increase the speed of exchanging information to maximize productivity and cost-savings  August Startz, Sales Engineer OpenText Fax Solutions  Expert technical resource working with hosted and on-premises RightFax servers using FoIP and TDM faxing OpenText ©2013 All Rights Reserved. 2
  • 3. Key Takeaways 1 Evolution: VoIP to FoIP to UC 2 Understanding FoIP 3 Network Needs and Requirements 4 Benefits of FoIP 5 Fax Servers and FoIP 3 OpenText ©2013 All Rights Reserved. 3
  • 4. The Evolution of Faxing  The first fax device was invented in 1846 by Alexander Bain  The first commercial fax service was between Paris and Lyon, France in 1865, eleven years before the invention of the telephone  The first commercial fax machine was launched by Xerox in 1964  Growth in the 70s and 80s, with today over 100 million fax machines in use today  Fax became, and remains today, the common denominator of communication for diverse organizations to exchange information OpenText ©2013 All Rights Reserved. 4
  • 5. Evolution of Faxing  Faxing isn’t about machines, paper, and toner anymore Analog 1980s Digital 1990s FoIP 2000s  UC strategies were developed and implemented in companies to support VoIP and a system of globally unified communications OpenText ©2013 All Rights Reserved. 5
  • 6. Companies transitioned to VoIP  Voice over IP revolutionized telecommunications     Cost savings Integration and collaboration with other applications No geographical boundaries Rich features  But voice traffic is not the only way to leverage IP OpenText ©2013 All Rights Reserved. 6
  • 7. Fax over IP was born  VoIP is meant to optimize voice traffic, not fax traffic  Poorly designed fax solutions can be difficult to implement in a VoIP environment  Fax machines do not work without additional equipment on a VoIP network  Fax over IP (FoIP) is sending and receiving faxes by utilizing an IP network Fax IP FoIP OpenText ©2013 All Rights Reserved. 7
  • 8. UC strategies were born  Bringing communication together in one location OpenText ©2013 All Rights Reserved. 8
  • 9. UC strategies must include fax OpenText ©2013 All Rights Reserved. 9
  • 10. Do you have any of these challenges?  You have a fleet of standalone fax machines that you want to get rid of  You’ve transitioned to VoIP, but what about fax?  Your UC strategy does not include fax  You need to make faxing more efficient within your organization OpenText ©2013 All Rights Reserved. 10
  • 11. What is FoIP?  Understanding FoIP  What equipment does FoIP require?  How does FoIP work?  Integration with a Unified Communication network OpenText ©2013 All Rights Reserved. 11
  • 12. Understanding FoIP  FoIP uses your IP network to send faxes by leveraging your existing VoIP infrastructure  Eliminates the need for analog phone lines for a fax machine  Integrates with your existing UC equipment (ie Cisco, Avaya, etc)  Send faxes to any faxing device around the world  Fax machines  Other fax servers OpenText ©2013 All Rights Reserved. 12
  • 13. FoIP interoperability and equipment  Cisco  Aastra  Avaya  Mitel  Verizon  ShoreTel  Level 3  XO Communications  Alcatel-Lucent  Siemens  Dialogic  CenturyLink  AudioCodes  Sonus  HP  Telstra  BabyTel  Quintum OpenText ©2013 All Rights Reserved. 13
  • 14. Leveraging your IP network to send fax traffic  Fax Passthrough  Real-time protocol  Fax passed using G.711 codec  Same as a G.711 voice call  Store and Forward (T.37)  Fax Relay: Based on T.38 protocol  Not real-time faxing  Real-time faxing  Not used much  Fax is demodulated and streamed to the other gateway using a fax relay protocol OpenText ©2013 All Rights Reserved. 14
  • 15. G.711  Modulated data information is sampled and encoded as standard PCM (i.e. G.711) and encapsulated in RTP for transport over IP just like a voice codec does for human speech  From the gateway perspective, this is more or less a G.711 voice call FoIP call using Passthrough RTP Packet with PCM Payload RTP RTP T.30 Fax call RTP IP PSTN OpenText ©2013 All Rights Reserved. 15
  • 16. T.38  T.38 is the industry standard for FoIP faxes  T.38 is not a real-time protocol, but converts fax traffic into data packets for real-time fax transmission T.30 Fax call T.38 Data 10110 Data 01100 IP Data RTP 10010 PSTN OpenText ©2013 All Rights Reserved. 16
  • 17. T.30 absolutely matters in Fax over IP T.38 / T.30 T.30 IP-enabled Equipment T.30 PSTN T.38 Data 10110 Data 01100 Data RTP 10010 T.30 wrapped in T.38 packets T.30 analog / digital PSTN End to end T.30 conversation T.30 absolutely matters in Fax over IP OpenText ©2013 All Rights Reserved. 17
  • 18. Headquarters FoIP  A fax server solution can be easily deployed on top of an existing VoIP infrastructure  The T.38 fax traffic can use the same QoS prioritization policies designed for VoIP to ensure error-free faxes IP IP  Rule of thumb - if VoIP works between two locations, then FoIP should work as well OpenText ©2013 All Rights Reserved. 18
  • 19. FoIP and Gateways  T.38 is not a call control protocol  We still have to use SIP or H.323 for call control  T.38 will have to be enabled on the gateway  G.711 is used during the first second of the call  High compression codecs such as G.729 do not support faxing H.323/SIP Call Setup G.711 Voice T.38 Fax Fax Server Voice Gateway OpenText ©2013 All Rights Reserved. 19
  • 20. Integration with Unified Communication network  Call manager handles all call routing and call control signaling to the voice gateways when a fax server is directly connected  For example, a fax server connected via H.323 to a call manager can communicate with H.323, SIP, or MGCP to voice gateways via T.38 FoIP H.323 SIP Call Manager Fax Server Voice Gateways OpenText ©2013 All Rights Reserved. 20
  • 21. FoIP Network Considerations  Quality of Service  Packet loss  Delay  Jitter  Bandwidth OpenText ©2013 All Rights Reserved. 21
  • 22. QoS Network Factors Packet Loss Jitter Originating Gateway Terminating Gateway T.38 T.38 T.38 T.38 T.38 Delay  Delay or latency: the amount of time it takes a packet to travel from source to destination  Packet loss: the amount of packets that are unsuccessful in arriving at the destination  Jitter: the measure of the variability over time of the latency across a network OpenText ©2013 All Rights Reserved. 22
  • 23. T.38 FoIP and Packet Loss T.38 Fax Packets IFP 2 (Secondary) IFP 3 (Primary) IFP 1 (Secondary) IFP 2 (Primary) Gateway IFP 1 (Primary) T.38 Fax Relay With Redundancy Level Set to 1  Fax over IP (FoIP) is generally more affected by packet loss than VoIP  Ideally no packet loss should occur for a fax call  T.38 has an optional redundancy feature that allows for multiple levels of redundancy to be configured to deal with varying amounts of packet loss  Each level of T.38 redundancy requires more bandwidth OpenText ©2013 All Rights Reserved. 23
  • 24. T.38 FoIP and Delay Multiple IP and PSTN hops are prime sources of additional delay PSTN IP PSTN Satellite links cause large amounts of delay IP  Delay is not as impacting to FoIP compared to VoIP  FoIP calls have been known to handle network delays of 1 second or more  However, as a best practice it is still recommended to minimize network delays as much as reasonably possible because too much delay will cause FoIP calls to fail  Watch out for multiple IP and PSTN hops and satellite links OpenText ©2013 All Rights Reserved. 24
  • 25. T.38 FoIP and Jitter Variably spaced T.38 packets arrive at the playout buffer and some may even be out of sequence Packets are re-sequenced if necessary and placed in the required order for playout 8 11 IP 10 Fax Fax Fax 9 Fax 7 6 5 4 Fax Fax Fax Fax Evenly spaced packets are played out to the DSP for transmission on the PSTN 3 2 1 Fax Fax Fax DSP Codec (T.38) 300 ms Fixed Playout Buffer  All gateways support a playout buffer that can be adjusted depending on the needs  With large playout buffers, FoIP can handle larger amounts of jitter than VoIP but as a best practice it is still recommended to keep jitter to a minimum OpenText ©2013 All Rights Reserved. 25
  • 26. QoS Design Parameters for T.38 FoIP Delay Jitter Packet Loss Fax < 30 ms (average, one-way) < 1% < 1000 ms Voice < 150 ms (one-way, mouth to ear) < 300 ms for fax relay, < 30 ms for passthrough None*, unless using T.38 with redundancy *Fax passthrough is very sensitive to packet loss and may be able to handle 0.1%–0.2% loss depending on when in the fax transaction the loss occurs and if it is consecutive packets. Cisco fax relay can handle more loss than passthrough but T.38 with redundancy is still the best choice for fax calls when packet loss is occurring. OpenText ©2013 All Rights Reserved. 26
  • 27. FoIP Bandwidth Utilization  Different FoIP transports use varying amounts of bandwidth  On links where saving bandwidth is a priority then relay is a better choice  T.38 redundancy handles packet loss much better than fax passthrough/ passthrough with redundancy 1Values are approximate with Ethernet or Frame Relay headers Bandwidth1 Codec G.711 (64 Kbps) 83 Kbps G.729 (8 Kbps) 27 Kbps G.723 (6.3 Kbps) 19 Kbps Fax passthrough/ pass-through (G.711) Fax passthrough (G.711) with redundancy 83 Kbps 170 Kbps T.38 (no redundancy) 25 Kbps2 T.38 (redundancy level 1) 41 Kbps2 T.38 (redundancy level 2) 57 Kbps2 2Values are peak and only occur during the sending of a page at 14.4 Kbps; gateways can force lower fax speeds for additional bandwidth savings OpenText ©2013 All Rights Reserved. 27
  • 28. Things to remember about FoIP  Moving from analog/TDM faxing to FoIP is possible and you can leverage your current UC environment  FoIP will use gateways (hardware), SIP and H.323 (call control protocols) and G.711, T.30 and T.38 (transmission protocols) to send faxes to any fax machine  Every network is different so make sure to leverage a FoIP provider with a large and trusted interop network OpenText ©2013 All Rights Reserved. 28
  • 29. When does FoIP make sense?  You’ve transitioned to VoIP, but you are still using TDM or analog faxing  You have a fleet of standalone fax machines that you want to get rid of  Your UC strategy does not include fax  You need to make faxing more efficient within your organization OpenText ©2013 All Rights Reserved. 29
  • 30. Benefits of FoIP and UC  Cost savings over traditional faxing  Unified Communications network which includes faxing  Ease of disaster recovery and high availability for faxing  Centralized reporting of all UC traffic, including fax  Rapid deployment of new fax lines/numbers OpenText ©2013 All Rights Reserved. 30
  • 31. Using a fax server with FoIP  What is a fax server?  Software installed on a server or servers that allows users, applications and devices to send and receive faxes electronically  Unified, centralized system for all faxing within an organization  Ways to send and receive faxes:      Desktop application Web application Email MFP devices Any backend application OpenText ©2013 All Rights Reserved. 31
  • 32. Benefits of fax servers Integrates Secure Compliant Configurable Enterprise Grade 32 OpenText ©2013 All Rights Reserved. 32
  • 33. Fax servers – key characteristics Secure Compliant Enterprise Grade Secure fax transmissions with on-premises fax server Maintain regulatory compliance such as HIPAA, PCI, SarBox Business continuity, high availability and DR options Keep faxed document private and confidential Private exchange of information Supports virtual and collective environments “Point-to-point” transmission Full audit trail Supports high volume and production faxing Immune to malicious viruses and malware Legally recognized proof of delivery Centralize a single fax solution across multinational organizations OpenText ©2013 All Rights Reserved. 33
  • 34. Fax servers – key characteristics Configurable Integrates Highly configurable and customizable Email applications such as Exchange/Outlook, Lotus Notes, Office 365 Multiple APIs for custom integration with business applications Applications such as SAP, Oracle, OpenText eDOCS, SharePoint Admin tools designed to help configure RightFax to unique settings and rules Any MFP including pre-built connectors for HP, KM, Ricoh and Xerox Multiple deployment options to meet any need Supports UC strategies with interoperability with UC vendors OpenText ©2013 All Rights Reserved. 34
  • 35. OpenText RightFax Fax Server RightFax provides a comprehensive fax solution perfect for enterprises to integrate fax with virtually any industry application to increase the speed of exchanging information to maximize productivity and cost-savings. OpenText ©2013 All Rights Reserved. 35
  • 36. OpenText Corporation  OpenText is the global leader in Enterprise Information Management to empower organizations to maximize the value of information and make better business decisions  OpenText is also:     #1 provider of enterprise fax services #1 provider of on-premises fax servers #1 FoIP supplier #1 Production fax server supplier The #1 provider of Information Exchange solutions. OpenText ©2013 All Rights Reserved. 36
  • 37. Learn more about OpenText Fax Solutions  Visit us at faxsolutions.opentext.com  Call us at 800.304.2727 or 1.425.455.6000  Email us at ix@opentext.com  Follow us at @OpenTextIX  Join us: http://www.opentext.com/community/ix OpenText ©2013 All Rights Reserved. 37