The bank that was running frame relay to connect branches has a plan to move to IP networks. Another thing is that a lot of networks aren't ready for [voice over IP]. That's also driving sales of networking gear. Cisco has a strong story there with its Integrated Services Routers.

Problems in pinpointing where a call is coming from can arise as users move from one wireless PBX or (local area network) access point to another.

Across all business sizes, their market share is in the low single digits.

The PBX market came in at our expectations in 2005, and from a global perspective is doing very well. Worldwide revenue growth accelerated in 2005, although it's mostly coming from EMEA, Asia Pacific, and CALA. North America lost revenue share in 2005 as things slowed down here, showing just 4 percent revenue growth for the year.

Despite the lower value ratings Cisco received in our survey this year, the truth is that organizations are reluctant to change vendors, and if they do, there has to be a very compelling case for doing so, ... Unlike in the router market, there doesn't appear to be a shake-up going on in the switch market. Vendors that make an organization's short list are likely already installed in that network.

As organizations continued to build out and upgrade their aging infrastructure, they spent more than $19 billion on enterprise routers and switches last year. Overall, the market for enterprise networking gear remains healthy, with Ethernet switches doing particularly well.