VoIP has become the favorable service in American telecom market. RBOC has to speed up deploying VoIP in order to keep ahead of other cable MSOs, IXCs and special network service providers on voice service.

• VoIP已成为美国电信市场的业务新宠,地方贝尔公司(RBOC)为了应对有线电视公司(cableMSO)、长途电话运营商(IXC)以及专业网络服务提供商针对话音业务的争夺战,不得不加速部署VoIP的进程。