Carousel Telephony Adapter

Carousel is a free software that can connect VoIP calls to ordinary telephone lines and vice versa using one of a number of professional telephony devices.
It works as a virtual FXO gateway. You install it as a service on any Windows PC. SIP protocol VoIP calls will be directed out to standard PSTN analog lines through the CAHTA, CallURL, Synway and other telephony boards and telephone line USB devices (green line on diagram below). Likewise, calls made to a standard telephone line can be directed to an internal VoIP network configured with a virtual PBX (eg. Axon ) via a telephony device and the Carousel software (blue line on diagram below).
This is ideal for businesses that wish to take advantage of the emerging VoIP technology but still retain standard telephone line(s) for incoming and outgoing calls and where Broadband or a SIP Gateway providers are not available.
Here are some key features of "Carousel Telephony Adapter":
ï¿­ Uses the standard SIP protocol to connect to any VoIP based service, lines or PBX.
ï¿­ The number of simultaneous calls are limited only by your hardware (it is unlimited in the software).
ï¿­ Runs as a background service on any Windows 2000/XP/2003/Vista computer. No special server or server software is needed.
ï¿­ Supports both PCI Telephony Cards and USB Telephony Devices to connect to real phone lines.
ï¿­ Installs in just minutes.
Requirements:
ï¿­ Windows 2000/XP/2003/Vista.
ï¿­ Any recommended Professional Telephony Device.