PC World Business

Imagine an IP voice and unified communications system that can be integrated into any application and customised to meet business needs. Sounds great, right? Well that project is the Asterisk IP-PBX and it's free to use and you get the source code. A far cry from proprietary PBX systems perhaps, but Asterisk has a vibrant ecosystem and is replacing systems from more established telephony vendors. Following interviews with the leaders of the Horde and Free Telephony projects, the Open Source Identity series talked to Asterisk founder and Digium CEO Mark Spencer about how one application can have such a profound effect on businesses and how open source can be a tough competitive landscape.

Recent outages affecting Google Apps have received a disproportionately large amount of coverage from the technology press, resulting in a misperception about the stability of this hosted collaboration and communication suite.

Amid the current economic doldrums, Juniper just posted third quarter revenue (up 29 percent to US$947 million) and earnings (US$148.5 million, up 75 percent). Barely seven weeks into the job, new CEO Kevin Johnson, a 16-year Microsoft veteran, spoke with Jim Duffy about what's driving the company's momentum.

VeriSign is in many ways synonymous with managing the Web, thanks to its handling of key DNS root servers and of name resolution for .com, .net, and other domains. In recent years, it's had both strong ups and strong downs.

We posed a few questions to Russ Housley, chair of the Internet Engineering Task Force, about why the standards body is developing network address translations for IPv6 when IPv6 was supposed to eliminate the need for NATs on the Internet. Here's what Housley had to say.

John McCool took over for Jayshree Ullal when the longtime and very visible Cisco data center chief resigned in May. McCool is no stranger though -- he came to Cisco in the Granite Networks acquisition during the industry's Gigabit Ethernet boom in the 1990s. Weeks into his new job as senior vice president of data center, switching and security, McCool shared some of Cisco's plans and visions with Managing Editor Jim Duffy.

Stronger data center management and automation technologies are on tap from IBM's software group, which is headed by Senior Vice President and group executive Steve Mills. Last week at IBM's Pulse conference, Mills sat down with Denise Dubie to discuss IBM's software strategy and his views on other hot network topics. Here is an excerpt of the interview.

Educators used to follow the auto industry because that's where all the lessons came from, says Bala Iyer. Then it was Microsoft. Now it's Google. In this month's Harvard Business Review, Iyer, an associate professor of technology operations and information management at Babson College, looked deep into Google's DNA to discern what makes it an innovation machine. Iyer talked with Kathleen Melymuka about what he and co-author Thomas H. Davenport discovered.

The Internet engineering community will be eating its own dog food tonight. For one hour, the 1,250 network experts at the Internet Engineering Task Force meeting will be able to access the Internet only through IPv6. The IETF created IPv6 in the mid-1990s, but this upgrade to the Internet's main communications protocol has not yet been widely deployed -- even by the technology's biggest proponents here. Network World National Correspondent Carolyn Duffy Marsan talked with IETF Chair Russ Housley about the group's IPv6 experiment, why the transition to IPv6 is taking so long, and whether the IETF leadership is starting to panic about IPv4 addresses running out. Here are excerpts from their conversation:

When Pakistan Telecom blocked YouTube's traffic one Sunday evening in February, the ISP created an international incident that wreaked havoc on the popular video site for more than two hours.

It's perhaps no small coincidence that Cisco makes a major announcement just days before Juniper does or hosts an important event. The day before Juniper unveiled its EX line of Ethernet enterprise switches last month, Cisco introduced its new data center switch, the Nexus 7000. This week was no different, as Cisco unveiled its next-generation ASR1000 edge routers just as Juniper held its annual analyst conference in Southern California. Network World Managing Editor Jim Duffy stole some of Juniper CTO and founder Pradeep Sindhu's time at the conference to gauge his thoughts on Cisco's new router as well as a range of other topics.