Virtual Modem is a substitute for hardware modem, which can connect two computers on LAN or Internet to realize data transmission. It creates a virtual modem device locally and simulates a "incoming call" when the remote end detects a network connection, thereby achieving TCP/IP based communication. This software does not require a phone line and can be used anytime, anywhere. It supports the Windows system and can create up to 256 virtual modems, compatible with multiple applications.