A timely snapshot of Cisco as a potential enterprise communication/collaboration competitor; check out the full article.
Throughout its history, Microsoft has been able to push other vendors around and dictate to them how the industry was going to evolve. Consequently, the company sits in an enviable market position. But Cisco represents a legitimate threat to Microsoft's top-dog status. The networking vendor has plenty of muscle and won't be easily intimidated. This figures to be one after-school brawl that will attract a lot of very interested spectators.