Small and mid-sized businesses can now take advantage of Skype’s free and low-cost Internet call rates with Actiontec’s VoSKY Exchange, the first Skype-certified product that allows Skype’s Internet telephony service to be used in an office environment.

This PBX add-on enables every phone extension in the office to make and receive Skype calls without any changes to existing PBX equipment, phones or user PCs. Designed for businesses of 10 to 300 employees, VoSKY Exchange is a videocassette-sized device that plugs into the PBX on one end and a Windows XP computer on the other.
Outbound Skype or SkypeOut calls are placed by dialing a one-digit access code that is configured when VoSKY Exchange is installed.
The VoSKY Exchange is available immediately through select telephony resellers. No pricing given.
More details in this press-release by Actiontec.

See also the new NetGear Skype WiFi Phone.