You can use Internet protocols to make phone calls inside your own network. And you don't have to pay for the minutes. But you can't do the same thing with a business partner. Instead, you have to pay a carrier like BT or AT&T to carry the phone call over the public switched telephone network (PSTN).
(PSTN is an analog network born in 1878 when Bell opened a switching office in New Haven, CT. It's done us proud, but it's time to move to a digital network.)
It's even worse for video conferencing. If you want to have a video conference internally, you can use your IP network to do it. But if you want to do a video conference with a business partner, you have to use a complex business gateway link and pay a lot of money for it.
Cisco thinks it's time to change that. We spoke with Cisco executives Tony Bates, Barry O'Sullivan, and Joe Burton about Cisco's intercompany media engine (IME), a new technology to replace PSTN with its Internet equivalent. Cisco's goals are audacious: