Method and system for small office and home office telephone private branch exchange allowing simultaneous data and voice communications

摘要

By coupling the functionality of an Internet Telephony function in a personal computer, an Internet Voice Gateway, and a small-office/home-office (SOHO) private branch exchange (PBX), and through inventive coordination of the functions of these units, a SOHO telecommunications system and method are realized which allow use of PBX extension telephones while all PBX outbound telephone lines are occupied by Internet data communications sessions.