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Why the Desktop VoIP Telephone isn’t Going Away

Major leaps in technology allow business phones — the desktop VoIP telephone — to serve a rapidly growing range of needs. welcomes “VoIP Week” contributor Jeff Rodman, Polycom‘s Chief Technology Evangelist. Since co-founding the company in 1990 Jeff has been instrumental in the realization of Polycom’s iconic products for voice, video, network communications, and other media.

The death of the desktop telephone has been predicted for decades. Technology has steadily advanced, business processes and communications needs have grown, and it’s actually rather surprising how that stodgy old friend the “desktop phone” has prospered. Look at its challenges: the PalmPilot, mobile phones and the Blackberry first, then on to Skype and other soft clients, unified information systems, mobile iOS, Windows and Android devices, teleworking, personal video calling, open-air workspaces, multiple Unified Communications and Control (UC&C) platforms, and the internet itself. And, of course, an always-growing need for specialised applications and consistent, efficient globalisation.

The desktop device remains firmly in place, though. What has actually happened is something that many didn’t see coming, yet is obvious in hindsight. The question was never really about when the desktop telephone would disappear, but rather how changing work needs and new technologies would shape its evolution.

“Personal transportation” did not disappear when Karl Benz introduced the Motorwagen in 1885, it evolved as technology moved beyond the horse. A broad range of personal transportation solutions emerged, from the motorbike to the motorhome, addressing such specific needs as the sedan, snowmobile, and all-terrain vehicle along the way. Similarly, the phone (which we might describe as a personal desktop live communications device) is not vanishing. It is, rather, becoming even more critical to business success, as it has advanced from its roots. Once merely the “black phone on a desk,” there is now a range of devices to cover an assortment of user needs from a basic desktop VOIP telephone to the rich integration of essential capabilities known as the Business Media Phone.

What is a phone today?

Modern business phones exist in many forms, but the most basic requirements they all share are durability and reliability. They are always on and ready for use, unlike cell phones, which require charged batteries and wireless connectivity. Similarly, soft clients or UC clients running on PCs must be running to accept calls or place calls. A phone is one thing we expect to always work, which is why they have traditionally been built like “brick houses,” never knowing who might slam down the handset, douse them with tea or drop them off of a tall table. Any phone is designed for a tightly defined set of uses, which it flawlessly performs. Whether a particular phone today supports only voice or a full bouquet of functions and applications, it is expected to do those jobs with unblinking confidence. As we will see, any device that might hope to take its place must be measured against this simple but essential standard of absolute reliability and responsiveness, one which we might call the “phone’s prime directive.”

Beyond this, major leaps in technology allow business phones to serve a rapidly growing range of needs. The adaptations to serve these can be broadly categorised in three directions— extensibility, unification, and media. Manageability and reliability, looking at the centralized support model removes the hassles from the end-user who can simply use it and doesn’t have to worry about software updates or configurations.


Whether PSTN, SIP, or some proprietary network, the most basic analogue phone needs only a handset and a phone cable. The underlying vision usually supports a much larger assortment of abilities, though, and different models within the same family will express different combinations. These can take the form of additional interfaces to support Bluetooth, wired, and DECT headsets, memory stick hosting to preserve conference audio, additional Ethernet jacks, “sidecar” accessories to provide one-touch selection of additional lines, and even add-on interactive HD video. Each of these extends the usefulness of a phone, by enabling future enhancement without burdening the initial purchase. The extent to which a phone can support this kind of evolution is one measure of its suitability for an organisation.


Although the range of abilities, environments, and platforms that might be supported by contemporary phones is much broader than it was just a few years ago, the user still expects them to work together simply and reliably. This means that functions must tie together transparently, and any complexity has to be neatly and efficiently concealed. The functions performed by the desktop phone must be able to connect to a wider set of networks; but more than that, the user’s experience has to remain consistent—a user cannot be confronted with wildly different behaviour just because, for example, SIP dialling and the Microsoft Lync platform are both in use within the organisation. For this reason, one essential requirement of a properly-implemented phone is that it retains compatibility with existing infrastructure. This means that interoperability among different UC and UC&C host platforms and simple, predictable behaviour is essential for a successful phone, whether it is a basic voice phone with enterprise directory access, or a full-fledged Business Media Phone, such as the Polycom range of VVX Business Media Phones.


Today, conversations can take place among almost any combination of styles and environments (i.e., HD or narrowband voice, accompanying charts and presentations, HD video, small-screen video from a handheld device, or even Immersive Telepresence rooms). They can be between two people in only two places, or among a gathering of groups and individuals everywhere (i.e., at airports, desks, homes, workspaces and conference rooms).

Although there is today a growing expectation that participants will join meetings with video, a phone must give its user a clear perception of the meeting and also present its user as a competent, efficient participant in that meeting, whether the user has joined with video or only audio. This means that whether sitting in open spaces or quiet offices, phones must reject surrounding noise while allowing their users to speak clearly. Further, if video capable, they must send a clear, high-fidelity image even if their display is compact. Just as a user does not want to sound like they’re on a muffled Smartphone, they also want to look as if they’re working from a professional HD video system, not shaking and blurry with a precariously- mounted camera.


The desk phone has changed and today it does enormously more than it did in the past, yet it remains a keystone of effective business operation. By providing consistency, reliability, comfort, and an easily managed connection, there are few tools in business that prove their continuing worth as well, or as quickly, as well-built table-top voice or Business Media Phones.

Over the past three years, the tables have turned. Savings that some organisations had expected to gain by leveraging employee BYOD’s have evaporated as enterprises are often now the ones who buy those smartphones for employees, often at considerably higher life-cycle cost than a well-built desk phone. This is one reason that we’re really not entering a “smartphone world,” and why the market for real desktop phones of all descriptions continues to grow. Organisations that experiment with smartphones discover that they’re no panacea, and they return to the purpose-built and IT-friendly desktop phone — and especially to its powerful newer sibling the Business Media Phone — as the tool for doing what they do best, communications without compromise…

The bottom line is that regardless of what the final decision for each employee turns out to be, the first step toward making correct choices is to carefully investigate, taking care to understand what is important to the organisation and to each user, and get the facts about the options available when making a long-term investment such as a phone system.

This is a VoIP week post on Check out other VoIP themed posts this week:

Why are major telcos afraid of encrypted VoIP? by Peter Cox
Emergency calls and VoIP by Peter Farmer
VoIP, the Bible and own brand chips by Simon Woodhead
Why the desktop VoIP telephone isn’t going away by Jeff Rodman
Small business VoIP setup by Trefor Davies
VoIP fraud-technological-conventionality-achieved  by Colin Duffy

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Voice Technology Makes Conference Calls Sound Amazingly Clear and Life-like welcomes “VoIP Week” contributor Jeff Rodman, Polycom‘s Chief Technology Evangelist. Since co-founding the company in 1990 Jeff has been instrumental in the realization of Polycom’s iconic products for voice, video, network communications, and other media.

When was the last time you used a conference phone? Today or perhaps yesterday? For a good many of us it likely hasn’t been more than a day or two. For many of businesses today, open-air voice conferencing is as ubiquitous as the traditional handheld or headset.

To ensure maximum efficiency and productivity during conference calls, it is critical for the speech to be clearly understood. We’ve all had the unfortunate experience of struggling to work out what someone is saying, be it due to noise, their distance from a microphone, or just an unfamiliar accent. Our minds are good at compensating for missing words and blurred sounds, but the more time they spend figuring out what might have been said, the less well we understand is actually being said (as seen in this short video). Therefore, it is vital that the physical “what we hear” stage be as clear and as accurate as possible.

Five aspects of speech audio work together to make or break a clear, understandable conversation: Bandwidth, Reverberation, Amplitude, Interactivity, and Noise. These five aspects, taken together, are called the BRAIN model of practical audio communications. The job of any conferencing system is to tune and balance these aspects automatically to provide the best possible hearing experience for the parties on both ends of the call.


Bandwidth: The Plain Old Telephone System (POTS) most of us grew up with carries less than half the information inherent in human speech, and this shortcoming was unthinkingly brought over into early IP telephones. However, newer system greatly enhance intelligibility through the implementation of HD Voice, making conversation much easier to follow and less fatiguing. The standards-compliant IP phones and conference phones that deliver this much higher audio bandwidth offer amazing clarity that rivals the best video systems, making it seem that you are in the same room as those on the other end of the call

Reverberation: Room echo at either end of a phone conversation makes the sound die down more slowly, thus smearing words together. While a “perfect” solution would include acoustic wall coverings for absorption, wall-mounted diffuser panels, and a personal headset or lapel mics for every participant, the reverberation problem is much more easily addressed via a multiple-microphone conferencing system that can intelligently steer and focus the pickup patterns to dynamically match the location of each talker in a room.

Amplitude: Insufficient amplitude, or loudness, can make it difficult to hear a talker. Repositioning the talker and listener are obvious solutions, but are not always practical. Conference phones are available, though, that can automatically adjust microphone gain to greatly help in these situations, and the difference in ease of understanding can be breathtaking.

Interaction: Interactive speech between distant groups can be difficult to conduct for a number of reasons, due in no small part to the absence of a true full-duplex system that allows for transparent interactive speech. A conference phone with good full-duplex technology enables talkers at both ends to be heard clearly without any delays or distractions. Beware, though, as although many speakerphones today lay claim full-duplex performance it is a very sophisticated feature that few can actually deliver.

Noise: Common noise sources share much of the same spectrum with speech and can make it difficult to understand conversations. First, try to fix noise at the source. Move the microphones farther from air conditioner ducts, overhead projectors, coffee makers, and so on. There will always be residual noise, of course, but the HD Voice technology found in high quality conference phones eliminates traditional clicking, buzzing, hissing, and other noise artefacts, and can thus make a big difference in ensuring that the voices of all participants on the conference call are clearly heard in spite of any acoustic challenges in the room.

So the next time you plan or join a conference call, consider the elements of the BRAIN model. Remember that they work together: each BRAIN component can compensate for deficiencies in others, which can be very important as some are much easier to address than others (consider the cost and difficulty of soundproofing a room compared to simply slipping in a better IP speakerphone with HD Voice and steered microphones, for example). You can learn more about the BRAIN model from Polycom’s The “BRAIN” Model of Intelligibility in Business Telephony whitepaper.

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