目前迹象表明,IP电话取代传统电话的日子已经不再遥远。IP电话的市场正迅速扩大,该领域的竞争不可避免。2003年12月5日,美国Quest通讯、ATT等相继正式推出了IP电话业务。最大的地方电话公司Verizon肯定也要在2004年开通IP电话。业内权威人士认为,IP电话服务此前一直是由中小通 The signs now indicate that the days when IP telephony replaced traditional telephony are no longer far away. The market for IP telephony is rapidly expanding and competition in this area is inevitable. December 5, 2003, the United States Quest Communications, ATT, have officially launched the IP telephony business. Verizon, the largest local phone company, must also have an IP phone in 2004. The authority of the industry believes that IP phone service has been by the small and medium-pass