You can stack multiple units together if your voice needs exceed the four channels built into the BS-1200. You can have a maximum of 30 BS-1200s, for a total of 120 ports. You can have a maximum of 2,048 units installed on your entire network. Coming soon is an Internet voice gateway, aimed at the carrier market that will run from 24 to 120 ports in a single unit. Also, you can monitor all of your gateways using any SMNP management platform such as HP OpenView.
New technology is nice when it works as advertised.
Oki Network Technologies' BS-1200 Internet Voice Gateway is one such product that delivers ease of use and exceptional voice quality without skimping on functionality. Also, the entry-level price is such that many companies can see a rapid ROI when moving long distance calls off of traditional public telephone networks and over to their data network.