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Monday, 11/20/2006 11:57:52 AM

Monday, November 20, 2006 11:57:52 AM

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Interesting Article about Skype (registration required)

Is Skype ready for the corporate world?

by Deb Shinder | More from Deb Shinder | 11/17/06

Tags: VoIP and IP telephony | Networking | Mobile/wireless | Cellular

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Takeaway: Many credit Skype with bringing VoIP to the masses, but is it a viable replacement for all of your other phone services? Deb Shinder weighs the pros and cons of Skype for corporate use, and she takes the Skype 3.0 beta for a test drive.

With millions of users worldwide, Skype is arguably the most popular consumer-level voice over IP (VoIP) implementation on the planet. As of the end of last year, Skype, now owned by eBay, had more than 50 million users according to many reports—and more than 200 million downloads.

Most credit Skype with bringing VoIP to the masses. One big reason for its popularity is that it's freeware—at least, if you don't need to be able to receive calls from regular phones.

Is Skype just a toy for home users and techie types who don't want to pay for a "real" VoIP service, or does it have something to offer businesses? Let's take a closer look at the peer-to-peer VoIP software from the same folks who brought us the KaZaA file-sharing program.
What's different about Skype?

In its original incarnation, Skype is a type of "soft phone"—it runs on a regular PC on top of a standard operating system. (It's available for Windows, Linux, and Macintosh OS X.)

However, there are dedicated mobile Wi-Fi phones available that will let you make Skype calls without a PC (but not without an Internet connection). One example is the NETGEAR Skype WiFi phone.

Most commercial VoIP services operate on one of two standard protocols: Session Initiation Protocol (SIP) or H.323, which are standards defined by the IETF and ITU. Calls typically go through a call server, which manages the calls.

But Skype is a little different: It uses closed, proprietary protocols and peer-to-peer technology that depend on "supernodes." According to some analyses, Skype's P2P network is also fundamentally different from other P2P networks, but—not surprisingly—it's similar to that of KaZaA, which also uses the supernode structure.

Skype also differs from other VoIP services because it provides instant text messaging (IM) and file-transfer services—not just voice communication. With the free software, you can perform all these transactions with others who have Skype installed on their computers, and you can make calls to PSTN and cellular numbers.

However, you can't receive incoming calls except from other Skype users. To do that, you need to pay for the SkypeIn service, which is considerably less expensive than most VoIP services—coming in around $38 (U.S.) for a full year.
Skype features and concerns for business

Security is a big concern for businesses today, especially those in industries regulated under HIPAA, GLBA, and other laws that require them to employ measures to protect the confidentiality of certain information. Skype encrypts all voice traffic with AES, a strong encryption standard adopted by the U.S. government in 2002.

Many VoIP systems suffer from implementation difficulty because their protocols don't play well with firewalls and Network Address Translation (NAT) devices. But Skype works behind NAT and firewalls.

Skype is also available for Windows Mobile devices, such as the Samsung i730 Pocket PC phone. If you have an Internet connection, you can use it to make calls instead of using up your allotted monthly cell phone minutes. With a SkypeIn number, you also get a voice mail account, where callers can leave messages if you don't answer (including when your computer is off or disconnected from the Internet).

Businesses will like the fact that you can make outgoing calls to other Skype users anywhere in the world at no cost—and that includes video calls. You can even conference with up to four people at no cost, and you can engage in group chats with up to 100 people.

Through the end of 2006, you can also place outgoing calls to landlines and mobile phones in the United States as part of the free service. If you pay for a SkypeIn phone number, you can receive calls from non-Skype phones as well as forward Skype calls to your landline or mobile phone.

One problem you may run into is that Skype calls don't display caller ID information. All Skype calls show up on caller ID as 000-012-3456. If the called party has configured his or her service to block unidentified calls, Skype calls won't go through.

It's also important to remember (as the Skype Web site and software warn you frequently) that Skype doesn't provide emergency service. You can't call 911 with it, so it's not a good idea to rely on it as your only phone service.

What's new in version 3?

When eBay acquired Skype in 2005, part of the official announcement quoted eBay CEO Meg Whitman as saying, "By combining the two leading e-commerce franchises, eBay and PayPal, with the leader in Internet voice communications, we will create an extraordinarily powerful environment for business on the Net."

The newest version, Skype 3.0 (currently in beta), appears to be making good on the goal of attracting business customers. In fact, it boasts a business version that's easy to deploy to multiple machines on a network using Windows Installer (MSI) packages, and companies can centrally manage multiple accounts with the Business Control Panel. The administrator can then allocate Skype phone numbers and voice mail to users. (At the time of this writing, the business version of Skype 3.0 beta is build, whereas the regular Skype 3.0 beta is build

There's an optional feature you can install to allow you to call regular phone numbers on any Web site with a click. There are also a number of add-ons you can install to make Skype more productive, including:

* Pamela—a personal digital assistant program for Skype
* TalkandWrite—a whiteboard application with voice and video
* Skylook—an extension that lets you record Skype calls and get SMS alerts, voice mail in your e-mail inbox, and Microsoft Outlook reminders by phone
* SKY-click—a Web-based call center
* Transclick—a translation plug-in for chat messages

The Skype experience

The last time I tried Skype, several years ago, I was less than impressed. Voice quality wasn't very good (using a T-1 Internet connection), and calls didn't connect reliably. So I was prepared to be disappointed when I downloaded and installed Skype 3.0.

Instead, I was pleasantly surprised. At almost 14 MB, the download isn't tiny, but the installation went smoothly and only took a few minutes. Over my 15-Mbps FiOS connection, the sound is as good as my landline and better than my Lingo VoIP and cellular lines.

One difference I noted between the consumer and corporate versions was that the former automatically imported my contacts from Outlook, whereas the latter didn't. However, I was able to do so easily by selecting the Import option from the Contacts menu.

I signed up for a SkypeIn phone number to test the feature, and Skype activated the number I selected within 10 minutes. You can request a specific number in your area code, which Skype will assign you if it's available, or you can choose from a list of available numbers.

I was able to immediately make calls from my landline to the new number and leave voice mail. The History tab displays voice mail messages, along with missed calls.

Is Skype a viable replacement for all of your other corporate phone services? Probably not, if only because of the emergency 911 limitations. But it's becoming more reliable and robust all the time, and the price certainly beats that of other VoIP providers. Skype is certainly an inexpensive way to add extra phone lines, with a whole slew of features that are business-friendly.

Want more tips and tricks to help you plan or optimize your VoIP deployment? Automatically sign up for our free VoIP newsletter, delivered each Monday!

Deb Shinder is a technology consultant, trainer, and writer who has authored a number of books on computer operating systems, networking, and security. She currently specializes in security issues and Microsoft products, and she has received Microsoft's Most Valuable Professional (MVP) status in Windows Server Security.

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