Plan Your WAN
There is an interesting article on NetworkWorld (also avaiable on over on ComputerWorld) that talks about what plans you should be making for your WAN. It points out that MPLS and Ethernet are widely deployed and are clearly mainstream solutions, and that most enterprises are now supporting remote access via tunnelling, whether that is SSL or IPSec. If you aren’t already using these tools, the article recommends you should look into them.
The article goes on to point out that SIP Trunking is gaining traction with business in a big way, and that most business should be looking into how they could be better utilizing managed services.
Of course, with one phone call to the right partner, you could speak to experienced experts on all of these topics, who have been deploying these solutions succesfully for years.