6. Go back and check your invoices to make sure your vendors are charging you what your contract specifies. An example would be if your wireless vendor agreed to give you free shipping when it sends new cell phones to remote workers. A few months later, shipping charges might start appearing on your cell phone bill, and if you don't check, you'll never know.

7. Eliminate unused software and modules.

8. Get tougher with vendors when it comes to negotiating contracts. Don't be afraid to switch vendors, or at least go the first step of determining what it would cost to switch.

9. Buy a telecom expense-management service. It pays for itself and more.

10. Deploy a corporatewide plan for buying cell phones. Then, buy a cell phone plan that optimizes expenses. This will be cheaper than letting employees buy phones and plans and then expense them.